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Adeptus Astartes Icon

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This is a list of official Space Marine Chapters created by Games Workshop. It does not include any fan-created Chapters, nor any Traitor Legions, other Renegade Chapters of Chaos Space Marines or those Space Marine Chapters considered Excommunicate Traitoris by the High Lords of Terra whether they serve the Dark Gods or not.

This is not a complete list as not every Chapter in existence in the Imperium of Man is known. A separate list exists for Renegade Space Marine Chapters and Chaos Space Marine warbands.

Please note: Fan-created Chapters must be posted at the Warhammer 40,000 Homebrew Wiki and not on this page.

A

Name Origin Founding Notes
Absolvers Unknown Unknown The Absolvers is a Codex Astartes-compliant Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is known about this Chapter in the Imperial records.
Accipiters Unknown Unknown The Accipiters is a Codex Astartes-compliant Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is known about this Chapter in the Imperial records.
Adulators Unknown Unknown The Adulators is a Codex Astartes-compliant Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is known about this Chapter in the Imperial records.
Angel Guard Unknown Unknown The Angel Guard is a Codex Astartes-compliant Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is known about this Chapter in the Imperial records.
Angels Encarmine Blood Angels Second Founding The Angels Encarmine is a Second Founding Successor Chapter of the Blood Angels. This Chapter is very rarely at full strength due to its highly active nature and willingness to intervene anywhere in the galaxy to protect the Emperor's people.
Angels Eradicant Unknown Unknown The Angels Eradicant is a Loyalist Codex Astartes-compliant Space Marine Chapter of unknown origin and Founding. Virtually nothing is known about this obscure Chapter within the official Imperial archives.
Angels Excelsis Blood Angels Unknown The Angels Excelsis was a Space Marine Chapter and a Successor Chapter of the Blood Angels, created during an unknown Founding of the 36th Millennium. The Angels Excelsis were destroyed to the last Astartes during the Devastation of Baal in 999.M41.
Angels Glorious Blood Angels Unknown The Angels Glorious was a Loyalist Space Marine Chapter and a Successor Chapter of the Blood Angels, created during an unknown Founding and wholly destroyed during the Devastation of Baal in ca. 999.M41.
Angels Numinous Blood Angels Unknown The Angels Numinous is a Loyalist Space Marine Chapter and a Successor Chapter of the Blood Angels created during an unknown Founding. Almost nothing is known about this Chapter in Imperial records.
Angels of Absolution Dark Angels Second Founding The Angels of Absolution is a Second Founding Chapter of the Dark Angels. However, unlike their fellow Unforgiven, the Angels of Absolution feel that their shame in the eyes of the Emperor of Mankind has already been wiped away and they have earned His absolution.
Angels of Damnation Unknown Unknown The Angels of Damnation is a Codex Astartes-compliant Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is known about this Chapter in the Imperial records.
Angels of Defiance Dark Angels Ultima Founding The Angels of Defiance is a Loyalist Space Marine Chapter comprised entirely of Primaris Space Marines created from the lineage of the mysterious Dark Angels and raised during the Ultima Founding of 999.M41.
Angels of Fire Unknown Unknown The Angels of Fire is a Loyalist Space Marine Chapter of unknown origin, founded during the 36th Millennium.
Angels of Fury Ultramarines (Officially); Novamarines (Suspected) Unknown The Angels of Fury is a Codex Astartes-compliant Loyalist Space Marine Chapter that was created from Ultramarines gene-seed in an unknown Founding. It had the honour of being under the tutelage of the venerable Novamarines Chapter following its inception.
Angels of Iron Unknown Unknown The Angels of Iron is a Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is known about this Chapter in Imperial records.
Angels of Light Blood Angels Unknown The Angels of Light is a Loyalist Space Marine Chapter and a Successor of the Blood Angels, raised during an unknown Founding. Almost nothing is known about this Chapter in Imperial records.
Angels of Penance Unknown Unknown The Angels of Penance is a Codex Astartes-compliant Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is known about this Chapter in the Imperial records.
Angels of Purgatory Unknown Unknown The Angels of Purgatory is a Codex Astartes-compliant Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is known about this Chapter in the Imperial records.
Angels of Redemption Dark Angels Second Founding The Angels of Redemption is a Second Founding Successor Chapter of the Dark Angels.
Angels of Repentance Unknown Unknown The Angels of Repentance is a Codex Astartes-compliant Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is known about this Chapter in the Imperial records.
Angels of Retribution Unknown Unknown The Angels of Retribution was a Codex Astartes-compliant Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is known about this Chapter in the Imperial records.
Angels of Vengeance Dark Angels Second Founding The Angels of Vengeance is a Second Founding Successor Chapter of the Dark Angels.
Angels of Vigilance Unknown Second Founding The Angels of Vigilance is a Loyalist Space Marine Chapter believed to have been created during the Second Founding from an unknown origin.
Angels of Wrath Dark Angels 10th Founding (Unconfirmed) The Angels of Wrath is a Successor Chapter of the original Dark Angels Space Marine Legion and is numbered amongst the ranks of the Unforgiven. Though its Founding is unknown, it might have possibly been created during the 10th Founding in the mid-35th Millennium, as by the 36th Millennium, it was still considered a young Chapter.
Angels Penitent Blood Angels Unknown The Angels Penitent is a Codex Astartes-compliant Loyalist Successor Chapter of the Blood Angels, created during an unknown Founding. Prior to the arrival of the mysterious individual known only as the "Undying Martyr", the Chapter was known as the Angels Resplendent. Many amongst this Chapter were once fine artisans, echoing their genetic forebears. While other Chapters fought for glory, faith or the sheer joy of slaughter, the Angels Resplendent had made nobility its creed. Alone amongst the scions of Sanguinius, this Chapter had been entirely free of the madness that haunted the Angel's bloodline. No Space Marine in the blue and gold had ever succumbed to the Black Rage.
Angels Porphyr Unknown Unknown The Angels Porphyr is a Loyalist Space Marine Chapter that was founded during the 31st Millennium, its actual Founding and origin remain unknown.
Angels Puissant Unknown Unknown The Angels Puissant is a Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is known about this Chapter in the Imperial records.
Angels Redeemed Unknown Unknown The Angels Redeemed is a Codex Astartes-compliant Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is known about this Chapter in the Imperial records.
Angels Repentant Unknown Unknown The Angels Repentant is a Codex Astartes-compliant Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is known about this Chapter in the Imperial records.
Angels Resplendent Blood Angels Unknown The Angels Resplendent is a little known Codex Astartes-compliant Loyalist Successor Chapter of the Blood Angels, created during an unknown Founding. Many amongst this Chapter were once fine artisans, echoing their genetic forebears. While other Chapters fought for glory, faith or the sheer joy of slaughter, the Angels Resplendent had made nobility its creed. Alone amongst the scions of Sanguinius, this Chapter had been entirely free of the madness that haunted the Angel's bloodline. No Space Marine in the blue and gold had ever succumbed to the Black Rage. Recently, the arrival of a strange mortal known as the "Undying Martyr" led to the Chapter's conversion to a puritanical variant of the Imperial Creed. The Angels Resplendent renamed themselves the Angels Penitent.
Angels Revenant Ultramarines 8th Founding The Angels Revenant is a Codex Astartes-compliant Loyalist Space Marine Chapter and a Successor Chapter of the Ultramarines. This Chapter's origins can be traced to the 8th Founding which allegedly occurred during the mid-34th Millennium, undertaken amid the dark times of the Nova Terra Interregnum, when the Imperium of Man had been split into twin interstellar empires. Ultimately, the Angels Revenant met their fate with the rise of the Necron Maynarkh Dynasty within the Orpheus Sector of the Segmentum Tempestus in 991.M41. It is believed that no more than a few hundred Angels Revenant survived the Necron assault upon their Chapter homeworld. The only survivors were those members of the Chapter who were far from the Orpheus Sector on Crusade.
Angels Sanguine Blood Angels Second Founding The Angels Sanguine is a Loyalist Chapter of Space Marines and a Second Founding Successor Chapter of the Blood Angels. It has a long and glorious history, having been pivotal in many victories against the Chaotic horrors that have emerged from the Eye of Terror. Yet the shadow of the Blood Angels' genetic flaw lingers ever about the Angels Sanguine.
Angels Vermillion Blood Angels Second Founding The Angels Vermillion is a Second Founding Successor Chapter of the Blood Angels.
Angels Vindicant Unknown Unknown The Angels Vindicant is a Loyalist Codex Astartes-compliant Space Marine Chapter of unknown origin and Founding. Virtually nothing is known about this obscure Chapter within the official Imperial archives.
Astral Drakes Unknown Unknown The Astral Drakes was a Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is known about this Chapter in Imperial records, except that it was annihilated to the last man by the Ork Grand Warlord Ghazghkull Mag Uruk Thraka.
Astral Fists Unknown Unknown The Astral Fists is a Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is currently known about this Chapter in the Imperial records. Its only notable engagement was when it was ordered to engage the Tyranids Echidna Splinter Fleet sometime during the 41st Millennium.
Astral Hawks Unknown Unknown The Astral Hawks is a Codex Astartes-compliant Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is known about this Chapter in the Imperial records.
Astral Knights Imperial Fists Unknown The Astral Knights was a Loyalist Codex Astartes-compliant Space Marine Chapter from an unknown Founding that ass a Successor Chapter of the Imperial Fists. The Astral Knights sacrificed nearly their entire Chapter in 926.M41 to destroy the hideous threat to the Imperium called the World Engine in the Vidar Sector.
Auric Patricians Unknown Unknown The Auric Patricians is a Codex Astartes-compliant Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is known about this Chapter in the Imperial records.
Aurora Chapter Ultramarines Second Founding The Aurora Chapter is a Loyalist Chapter of Space Marines that is a Second Founding Successor Chapter of the Ultramarines. It took its name from the principally armoured formations of the XIII Legion during the Great Crusade, who helped halt an Ork advance on the ash plains of Cypra Mundi, and in doing so had saved a city of millions from a savage death. Afterwards its Battle-Brothers commemorated the battle by mirroring on their right pauldron the emerald light of the blazing aurora borealis that had riven the skies under which they had fought. The existing armoured formations of the Ultramarines became a part of the newly founded "Aurora" Chapter during the Second Founding.
Aurora Talons Unknown Unknown The Aurora Talons is a Loyalist Space Marine Chapter of unknown Founding and origin. Like many more unorthodox Chapters, some utilise unique titles that are products of Chapter history and creed. The Aurora Talons are known for maintaining no less than five "Master Bombadiers" in their command roster. Almost nothing else is known about this Chapter in current Imperial records.
Avengers Unknown Unknown The Avengers is a Loyalist Space Marines Chapter of unknown Founding and origin about which almost nothing is known in Imperial records.
Avenging Sons Unknown Unknown The Avenging Sons is a Codex Astartes-compliant Loyalist Space Marines Chapter originally created during the 19th Founding from the gene-seed of the Ultramarines. The Avenging Sons hail from the world of Traekonnis Major.

B

Name Origin Founding Notes
Benedictors Unknown Unknown The Benedictors is a Codex Astartes-compliant Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is known about this Chapter in the Imperial records.
Black Consuls Ultramarines Second Founding The Black Consuls is a Loyalist Space Marine Chapter that was a Second Founding Successor or Primogenitor Chapter of the Ultramarines. The Black Consuls were recorded as having been annihilated at the Siege of Goddeth Hive in 455.M41 by elements of the Word Bearers Traitor Legion. Their current status is unknown, though Imperial records indicate that a force of Black Consuls is still operating in the Jericho Reach as part of the Achilus Crusade.
Black Crusaders Unknown Unknown The Black Crusaders is a little-known Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is known about this Chapter in the Imperial records. The Black Crusaders were known to have been involved in an Imperial campaign in which they attacked an Ork enclave on the planet of Guilus II, and were the first to encounter the Grot Bomm Launcha.
Black Dragons Salamanders (Unconfirmed) 21st Founding The Black Dragons is a Loyalist Space Marine Chapter from the "Cursed" 21st Founding. Its gene-seed is defective and riddled with mutation. Specifically, the Black Dragons' mutated Ossmodula organ can lead to the development of bony crests on the heads and arms of certain Space Marines of the Chapter. The affected Black Dragons Marines are formed into special units known as Dragon Claws.
Black Guard Raven Guard Second Founding The Black Guard is a Loyalist Space Marine Chapter and a rare Raven Guard Successor Chapter of the Second Founding. Much of this Chapter's history has been lost to Imperial records.
Black Inculpators Unknown Unknown The Black Inculpators is a Codex Astartes-compliant Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is known about this Chapter in the Imperial records.
Black Ravens Unknown Unknown The Black Ravens was a Loyalist Space Marine Chapter of unknown Founding and origin. Unfortunately, the Black Ravens met their end while fighting the Harvest Warband of the Khorne Daemonkin within walls of their own fortress-monastery.
Black Talons Unknown Unknown The Black Talons is a Loyalist Space Marine Chapter of unknown Founding and orign. There is virtually nothing known about this Chapter in the Imperial records.
Black Templars Imperial Fists Second Founding The Black Templars is a Loyalist Second Founding Space Marines Chapter derived from the Imperial Fists' gene-seed and their Primarch, Rogal Dorn. Its origin can be traced back to the Imperial Fists' defence of Terra during the Horus Heresy. Since that time, the Black Templars have been on the longest Crusade the Imperium of Man has ever known to prove their loyalty to the Emperor of Mankind.
Black Wings Unknown Unknown The Black Wings is a Loyalist Codex Astartes-compliant Space Marine Chapter of unknown origin and Founding. Little else is known of this Chapter's history within the Imperial archives.
Blazoned Legion Unknown Unknown The Blazoned Legion is a Loyalist Space Marine Chapter of unknown origin and Founding. Beyond its simple existence, nothing else is known about it in Imperial records.
Blades of Vengeance Dark Angels Ultima Founding The Blades of Vengeance is a Loyalist Space Marine Chapter comprised entirely of Primaris Space Marines, created from the lineage of the mysterious Dark Angels and raised during the Ultima Founding of 999.M41. These gene-crafted warriors are the key components of the resurrected Primarch's Indomitus Crusade to reclaim the galaxy for Mankind.
Blood Angels N/A First Founding The Blood Angels is one of the 20 First Founding Legions of the Space Marines. The Blood Angels are well known for their bloodthirsty nature in battle, and feared for the curse of flawed gene-seed they carry. They are among the longest-lived of the Adeptus Astartes, with some of the Chapter's Space Marines having served the Emperor of Mankind for over a thousand standard years. Due to recent events, the Blood Angels' numbers have been severely depleted. Under the threat of extinction, and in order to quickly replenish their numbers, the Blood Angels were forced to ask their kindred Successor Chapters from subsequent Astartes Foundings for a tithe of warriors from the related Chapters' pools of Neophytes, their candidate Space Marines. With these tithes of new recruits, the Blood Angels were able to replenish their losses more quickly, though they still face a time of trial like none the Chapter has known since the days of the Horus Heresy.
Blood Drinkers Blood Angels Second Founding The Blood Drinkers is a Loyalist Space Marines Chapter and a Second Founding Successor Chapter of the Blood Angels. The name "Blood Drinkers" comes from the Chapter's craving for blood, the result of a mutated omophagea organ. The Blood Drinkers Chapter Master is Orloc, who participated alongside his Battle-Brothers in the heroic defence of the Blood Angels' homeworld of Baal from the Forces of Chaos and the Tyranids in 999.M41.
Blood Knights Unknown Unknown The Blood Knights is a Loyalist Space Marine Chapter of unknown origin and Founding. Beyond its simple existence, nothing else is known about it in Imperial records.
Blood Legion Blood Angels Unknown The Blood Legion is a Loyalist Space Marine Successor Chapter of the Blood Angels that was created during an unknown Founding. Almost nothing is currently known about this Chapter in Imperial records.
Blood Ravens Thousand Sons (Unconfirmed) Unknown The Blood Ravens is a Loyalist Space Marine Chapter of unknown origin and Founding. The origins of the Blood Ravens are shrouded in mystery. This elusive Chapter has always been drawn to the pursuit of knowledge and the acquisition of ancient lore and produces an unusually high number of Librarians among its ranks as a high proportion of Neophytes develop psychic abilities soon after their implantation with the Blood Ravens' gene-seed organs. The powerful Blood Ravens Librarians guide the Chapter, enabling them to fight with a precision and calculated fury made possible by their ability to predict and thwart their enemy's strategies and tactics before they come to pass. These arcane powers have led to great speculation and some worry about the true nature and origins of this Chapter in the rest of the Imperium of Man.
Blood Swords Blood Angels Unknown The Blood Swords is a Codex Astartes-compliant Loyalist Space Marine Chapter that was created using the gene-seed of the Blood Angels. The Chapter is unique among the Space Marines in that for a time its Chapter Master, Daggan, was actually a Venerable Dreadnought. Currently, the Blood Swords have joined with the Star Dragons Chapter to travel the wastes of space near the Eye of Terror in a joint containment fleet designated Containment Fleet Kappa.
Blood Tigers Unknown Unknown The Blood Tigers is a Codex Astartes-compliant Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is known about this Chapter in the Imperial records.
Blood Wings Blood Angels Unknown The Blood Wings is a Loyalist Space Marine Chapter and a Successor Chapter of the Blood Angels, created during an unknown Founding.
Bone Knives Unknown Unknown The Bone Knives is a Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is known about this Chapter in the Imperial records except for its participation in the Nusquam Fundimentibus Campaign in 941.M41.
Brazen Claws Iron Hands Second Founding The Brazen Claws is a Loyalist Second Founding Successor Chapter of the Iron Hands Legion. The Chapter recently emerged from a twenty-year-long ill-conceived Crusade of Venegeance into the Eye of Terror against the Traitor Legions and other Forces of Chaos. Some portions of the Chapter were corrupted during that struggle, though the majority of its Battle-Brothers remain free of Chaotic taint.
Brazen Fists Unknown Unknown The Brazen Fists is a Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is known about this Chapter in the Imperial records, except that it has participated in the First and the Second Punisher Wars against the vile Punishers Chaos Space Marine Warband.
Brazen Minotaurs Unknown Unknown The Brazen Minotaurs is a Loyalist, Codex Astartes-compliant Space Marine Chapter of unknown Founding and origin. Little of substance is known about the Chapter in Imperial records, though what is known is that the Chapter has worked closely with the Raven Guard Chapter on several occasions, and a close relationship has developed between the two as a result.
Brazen Skulls Unknown Unknown The Brazen Skulls was a Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is known about this Chapter in the Imperial records. Its only notable engagement was when it took part in the Sabbat Worlds Crusade fighting in support of the reincarnated Saint Sabbat. The Brazen Skulls was eventually wiped out as a Chapter by 773.M41.
Brothers of Jarad Blood Angels Unknown The Brothers of Jarad was a Loyalist Space Marine Chapter and a Successor Chapter of the Blood Angels, created during an unknown Founding and wholly destroyed during the Devastation of Baal in ca. 999.M41.
Brotherhood of a Thousand Unknown Unknown The Brotherhood of a Thousand is a Loyalist Codex Astartes-compliant Chapter of unknown origin and Founding.
Brothers of the Red Blood Angels Unknown The Brothers of the Red was a Loyalist Space Marine Chapter and a Successor Chapter of the Blood Angels, created during an unknown Founding. Almost nothing is known about this Chapter in Imperial records. Created as they were from the Blood Angels' gene-seed, the Brothers of the Red too, carried the genetic flaws inherited from their Primarch Sanguinius. Like many of their contemporary Successor Chapters founded in later centuries, the Brothers of the Red were greatly affected by the genetic flaw of their Blood Angels' heritage, the Black Rage, which eventually led to their Chapter being fatally undone and their inevitably extinction.
Brothers Penitent Unknown Unknown The Brothers Penitent is one of the Loyalist Space Marine Chapters founded as part of the Astartes Praeses -- one of the 20 Chapters of Astartes mentioned in the ancient tome known as the Mythos Angelica Mortis that was created to defend the regions surrounding the Eye of Terror in the Segmentum Obscurus from the Forces of Chaos. The Brothers Penitent are of an unknown Founding and origin. Though this Chapter works alongside those of the Astartes Praeses, it has a reputation for being insular in nature.
Burning Blood Blood Angels Unknown The Burning Blood was a Loyalist Space Marine Chapter and a Successor Chapter of the Blood Angels, created during an unknown Founding and wholly destroyed during the Devastation of Baal in ca. 999.M41.

C

Name Origin Founding Notes
Carcharodons Raven Guard (Unconfirmed) Unknown The Carcharodons is a Loyalist Space Marines Chapter of brutal reputation and unknown Founding. It is a suspected Successor Chapter of the Raven Guard. The Carcharodons participated in the latter stages of the Badab War and are known to be an ancient fleet-based Chapter.
Carmine Blades Blood Angels Unknown The Carmine Blades is a Loyalist Space Marine Successor Chapter of the Blood Angels, created during an unknown Founding. Hailing from the Feral World of Haldroth, this Chapter was originally named the Swords of Haldroth. Unknowingly, they believed they were Successors of the Ultramarines. Only a chance meeting with Astorath the Grim in the late 41st Millennium revealed their true heritage, including the names of their genetic twin-curses of the Black Rage and Red Thirst.
Castellans of the Rift Ultramarines Ultima Founding The Castellans of the Rift is a Loyalist Space Marine Chapter comprised entirely of Primaris Space Marines created from the lineage of the Ultramarines and raised during the Ultima Founding of 999.M41. It is charged with standing sentinel over the Nachmund Gauntlet, one of the only stable routes through the Cicatrix Maledictum.
Celebrants Unknown Unknown The Celebrants Chapter was founded during the 36th Millennium. It is unknown what Chapter provided its gene-seed. Its only mention in Imperial history is that it was ordered to withdraw from the world of Phaethon IV and instead to take up garrison duty on the Ecclesiarchy's Cardinal World of Nedicta Secundus to protect the holy relics of the Adeptus Ministorum found there from the ravages of the Tyranid Hive Fleet Kraken.
Celestial Guard Unknown 25th Founding The Celestial Guard is a Loyalist Space Marine Chapter created during the 25th Founding from uncertain lineage. Its Chapter homeworld is called Erenon and is a storm-shrouded Ocean World located to the galactic northwest of Nocturne.
Celestial Lions Imperial Fists Unknown The Celestial Lions is a Loyalist Space Marine Chapter raised in the 38th Millennium during an unknown Founding as a Successor Chapter of the Imperial Fists. Following a campaign upon the world of Khattar in 988.M41, the Celestial Lions became highly vocal against the Inquisition's actions, which proved to be the Chapter's undoing. During the Third War for Armageddon they were nearly wiped out. They are now in the process of rebuilding their depleted ranks.
Celestial Swords Unknown Unknown The Celestial Swords was two now-extinct Loyalist Space Marine Chapters created at some time in the third century of M38, during an unknown Founding and from uncertain lineage. The Celestial Swords hold the unique distinction of actually having been two separate Chapters founded with identical names and heraldries due to a mistake made by the Imperial bureaucracy. Both Chapters were destroyed during the 9th Black Crusade.
Celestian Guard Unknown Unknown The Celestian Guard is a Codex Astartes-compliant Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is known about this Chapter in the Imperial records other than its participation in the Lycanthos Drift Campaign in 780.M41.
Cerulean Guard Unknown Unknown The Cerulean Guard is a Loyalist Chapter of Space Marines of unknown Founding and origin which fought to defend the Fortress World of Cadia during the climax of the 13th Black Crusade in 999.M41. Little else is currently known about it in Imperial records.
Champions of Thanatos Unknown Unknown The Champions of Thanatos is a Loyalist Space Marine Chapter of unknown origin and Founding. Beyond its simple existence, nothing else is known about it in Imperial records.
Charnel Guard Blood Angels (Unconfirmed) Unknown The Charnel Guard is a Loyalist Space Marine Chapter of unknown Founding and origin. This reclusive, fleet-based Chapter, whose chronicle threads through many dark passages of the Imperium's history, is believed by some sources to be an unacknowledged offshoot of the Blood Angels. This Chapter is known to seal its Battle-Brothers away in vast stasis crypts when not on campaign, and the Chapter's armoury holds countless examples of weapons rarely seen in late M41.
Chorus of Eltain Unknown Unknown This Chapter undertook the disastrous Abyssal Crusade in 321.M37 into the Eye of Terror. It is unknown what it endured during its sojourn into the Eye, and it was declared Martyr Extermis in absentia.
Clerics of Steel Unknown Unknown This Chapter undertook the disastrous Abyssal Crusade in 321.M37 into the Eye of Terror, where it was corrupted by Chaos, and became the warband of Chaos Space Marines known as the Invocators. Declared Excommunicate Traitoris.
Consecrators Dark Angels Unknown The Consecrators is a Successor Chapter of Loyalist Space Marines created from the gene-seed of the Dark Angels during an unknown Founding. The Consecrators are noted for bearing all manner of holy relics and ancient patterns of arms, armour and vehicles.
Contenders Unknown Unknown The Contenders is a Codex Astartes-compliant Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is known about this Chapter in the Imperial records.
Crimson Castellans Unknown Unknown The Crimson Castellans was a Loyalist Space Marine Chapter of unknown origins and Founding which became embroiled in a civil war after a portion of its brotherhood turned to Chaos. However, both Loyalist and Renegade factions were largely destroyed in 993.M41, when the Tyranid Hive Fleet Jormungandr unexpectedly descended upon the world of Sephrax. Their Chapter homeworld of Vorl Secunda was subsequently abandoned due to the outbreak of a mysterious illness known as the Grey Phage, forcing the Crimson Castellans to become a fleet-based Chapter.
Crimson Consuls Ultramarines Unknown The Crimson Consuls is a Loyalist Space Marine Chapter of unknown Founding which is a Successor Chapter of the Ultramarines. It was destroyed entirely by the machinations of the Alpha Legion Chaos Space Marines, possibly on the orders of Alpharius (or Omegon masquerading as Alpharius) himself.
Crimson Fists Imperial Fists Second Founding The Crimson Fists is one of the Successor Chapters created during the Second Founding, drawn from the Imperial Fists Legion. Though they remain understrength from the Ork invasion of Rynn's World, the Crimson Fists are a proud and stubborn Chapter, never admitting defeat.
Crimson Guard Unknown Unknown The Crimson Guard is a Codex Astartes-compliant Space Marine Chapter created from uncertain lineage. Almost nothing else is known about it in Imperial records.
Crimson Legion Blood Angels Unknown The Crimson Legion is a now-extinct Loyalist Space Marine Chapter and a Successor Chapter of the Blood Angels, created during an unknown Founding. Almost nothing is known about this Chapter in Imperial records. Created as it was from the Blood Angels' gene-seed, it too carried the genetic Flaws inherited from Sanguinius. Those affected by the Black Rage were often used as blunt instruments, gathered into Death Companies, and hurled into the thickest of the fighting.
Crimson Paladins Unknown Unknown The Crimson Paladins is a Loyalist Codex Astartes-compliant Space Marine Chapter of unknown origin and Founding. Virtually nothing is known about this obscure Chapter within the official Imperial archives, except the name of the Chapter's homeworld of Fortress and its fortress-monastery, which is known as Honour Hold. Much of this fortress is below ground as added protection against orbital strikes.
Crimson Sabres Unknown 13th "Dark" Founding The Crimson Sabres was once a Loyalist Space Marine Chapter created during the mysterious 13th Founding, the so-called "Dark Founding", which occurred sometime between M35 and M36. Problems culminated with the genocidal war on the jungle world of Umidia. The Chapter soon found ítself cursed by the Chaos God Khorne, forever haunted by the fell voices of the slain even after the combat had ended. Fleeing to the Eye of Terror to seek an honourable death, it became fully corrupted by the Dark Gods. When it returned to realspace, it had become the Chaos warband known as the Crimson Slaughter.
Crimson Scions Unknown Unknown The Crimson Scions is a Loyalist Space Marine Chapter of unknown origin and Founding. Virtually nothing is known about this obscure Chapter within the official Imperial archives, except that it was located near the Imperial Hive World of Minea within the Segmentum Ultima.
Crimson Scythes Unknown Unknown The Crimson Scythes is one of the Loyalist Space Marine Chapters founded as part of the Astartes Praeses -- one of the 20 Chapters of Astartes mentioned in the ancient tome known as the Mythos Angelica Mortis -- that was created to defend the regions surrounding the Eye of Terror in the Segmentum Obscurus from the Forces of Chaos. The Crimson Scythes are of an unknown Founding and origin.
Crimson Shades Unknown Unknown The Crimson Shades is a Loyalist Space Marine Chapter of unknown origin and Founding. The Librarians of the Crimson Shades, like their counterparts of the Space Wolves and the White Scars Chapters, are one of the noteworthy examples that take exception to the doctrines of the Codex Astartes. Exactly what this difference is has not yet been recorded.
Crimson Swords Blood Angels Unknown The Crimson Swords is a little known Successor Chapter of the venerable and heroic Blood Angels Chapter, which was created during an Unknown Founding. Like their fellow Scions of Sanguinius, the Knights of Blood, the Crimson Swords have also gone down in infamy for the terrible destruction they wrought against both friends and foes alike. Their ultimate fate is unknown, but it is generally believed that they were completely wiped out amid unwinnable conflicts of their own creation.
Crimson Talons Unknown Unknown The Crimson Talons is a Loyalist Codex Astartes-compliant Space Marine Chapter of unknown origin and Founding. Virtually nothing is known about this obscure Chapter within the official Imperial archives.
Crimson Templars Unknown Unknown The Crimson Templars is a Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is known about this obscure Chapter in official Imperial records, except that it guards the Eastern Fringe of the galaxy.
Crusaders Unknown Unknown The Crusaders is a Codex Astartes-compliant Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is known about this Chapter in the Imperial records. Based upon the nature of their Chapter icon which closely resembles the holy symbol of the Adeptus Ministorum, the Crusaders might be strict adherents of the Imperial Cult. But this is merely conjecture.
Crusaders of Dorn Imperial Fists (Suspected) Unknown This Chapter undertook the disastrous Abyssal Crusade in 321.M37 into the Eye of Terror. It was corrupted by Chaos, and became the warband of Chaos Space Marines known as the Brotherhood of Lethe. Declared Excommunicate Traitoris.

D

Name Origin Founding Notes
Dark Angels N/A First Founding The Dark Angels is considered amongst the most powerful and secretive of the Loyalist Space Marine Chapters. It was the I Legion of the original 20 Space Marine Legions to be created during the First Founding of the 30th Millennium. Though the Dark Angels claim complete allegiance and service to the Emperor of Mankind, their actions and secret goals at times seem at odds with that professed loyalty, as they strive above all other things to atone for an ancient crime of betrayal committed over 10,000 standard years ago.
Dark Brotherhood Unknown Unknown The Dark Brotherhood is a Codex Astartes-compliant Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is known about this Chapter in the Imperial records.
Dark Crusaders Unknown Unknown The Dark Crusaders is a Loyalist Space Marine Chapter of unknown origin and Founding. Nothing else is currently known about it in Imperial records.
Dark Eagles Raven Guard (suspected) Unknown The Dark Eagles is a Loyalist, Codex Astartes-compliant Space Marine Chapter. It is suspected that it is one of the rare Successor Chapters of the Raven Guard. Its exact Founding date is unknown. Unfortunately, at this time almost nothing is currently known about the Chapter in Imperial records beyond its name and Chapter appearance.
Dark Hands Unknown Unknown The Dark Hands is a Codex Astartes-compliant Chapter of unknown origin.
Dark Hunters White Scars Unknown The Dark Hunters is a Loyalist Codex Astartes-compliant Space Marine Chapter descended from the gene-seed of the White Scars during an unknown Founding. The Dark Hunters hail from the night world of Phobian, and ever since the Dellrond Campaign, where a single Dark Hunters Battle Company held the entrance to the Cathedral of the Emperor Ossified for five standard years against the Orks of WAAAGH! Nagrut, the Chapter has had a reputation for being particularly hardy and resolute warriors.
Dark Paladins Unknown Unknown The Dark Paladins was a Loyalist Space Marine Chapter of the 3rd Founding and unknown origin that was destroyed in combat with unknown xenos on the world of Jarrman Primus.
Dark Sons Ultramarines Unknown The Dark Sons is a Loyalist Space Marine Chapter of unknown Founding created from the lineage of the vaunted Ultramarines Chapter. Along with the Angels of Fury, the Dark Sons had the honour of being under the tutelage of the venerable Novamarines Chapter following their inception. The Dark Sons' homeworld is the planet Darkhold in the Segmentum Obscurus. Little else is known about the Chapter in current Imperial records.
Dark Swords Unknown Unknown The Dark Swords is a Codex Astartes-compliant Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is known about this Chapter in the Imperial records.
Dark Templars Unknown Unknown The Dark Templars is a Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is known about this obscure Chapter in official Imperial records.
Death Eagles Raven Guard (Suspected) / Emperor's Children (Unconfirmed) Unknown The Death Eagles is a Loyalist, Codex Astartes-compliant Space Marine Chapter. It is suspected that it is one of the rare Successor Chapters of the Raven Guard, although some believe its roots actually lead to the Emperor's Children Traitor Legion, during the bygone Age of Darkness during the Horus Heresy in the 31st Millennium.
Death Hawks Unknown Unknown The Death Hawks is a Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is known about this Chapter in Imperial records save that one of its detachments participated with the Space Wolves in the failed defence of the world of Parenxes from the Red Corsairs.
Death Knights Unknown Unknown The Death Knights is a Loyalist, Codex Astartes-compliant Space Marine Chapter of unknown origin and Founding. Nothing else is recorded about it in Imperial records.
Death Spectres Raven Guard (Unconfirmed) 13th Founding The Death Spectres is a Loyalist Chapter of Space Marines of unknown origin of the 13th ("Dark") Founding, only the second known Chapter of Astartes, besides the Exorcists, to have been created in that unusual Founding. It is possibly a Successor Chapter of the Raven Guard as it shares the same mutations as found in that Chapter's gene-seed. It participated in the Siege of Lelithar and the defence of the Cadian Sector against the 13th Black Crusade.
Death Strike Unknown Unknown The Death Strike is a Loyalist Space Marine Chapter of unknown origin and Founding whose fortress-monastery is located on its homeworld of Nihilas. It is very similar in appearance to the Rainbow Warriors Chapter. This Chapter participated in multiple campaigns, including the Assault on Moros, the Verdan II Extraction, the Ulik Sector campaign and the 13th Black Crusade.
Deathwatch N/A N/A The Deathwatch is not an actual Space Marine Chapter. Instead, it is comprised of Kill-teams formed from the Veteran Space Marines of other Chapters that serve as the Chamber Militant of the alien-hunting Ordo Xenos of the Imperial Inquisition.
Desert Lions Unknown Unknown The Desert Lions is a Loyalist Codex Astartes-compliant Space Marine Chapter of unknown Founding and origin. During the dark years of the Great Scouring in the early 31st Millennium, the Desert Lions took part in the vitally important military campaign known as Operation Carthage, to take back the world of Istvaan V, the sight of the treacherous Drop Site Massacre, that saw three Loyalist Legions shattered.
Destroyers White Scars Second Founding The Destroyers is a Loyalist Second Founding and rare Successor Chapter of the White Scars. Though the Destroyers have won great victories in the Imperium's name, the stability of their gene-seed has come into question and there are concerns surrounding their savage conduct in battle. Nothing else is recorded about the Chapter in Imperial records.
Dictators Unknown Unknown The Dictators is a Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is known about this Chapter in the Imperial records.
Disciples of Blood Blood Angels Unknown The Disciples of Blood is a Loyalist Space Marine Successor Chapter of the Blood Angels, created during an unknown Founding. Almost nothing is known about this Chapter in Imperial records.
Disciples of Caliban Dark Angels Unknown The Disciples of Caliban is a Successor Chapter of the Dark Angels Chapter. The creation of the Disciples of Caliban was unusual, in that then-Chapter Master Anaziel of the Dark Angels specifically requested the creation of a new Space Marine Chapter from Dark Angels gene-seed of the High Lords of Terra sometime during the 37th Millennium.
Doom Eagles Ultramarines Second Founding The Doom Eagles is a Loyalist Space Marines Chapter and a Second Founding Successor Chapter of the Ultramarines. The homeworld of the Doom Eagles is Gathis II. Atop the Ghostmountain, their world's largest peak, sits their mighty fortress-monastery, the Eyrie. The Doom Eagles is a notoriously pious, grim and aloof Chapter of Astartes. However, unlike the Ultramarines, their use of Dreadnoughts is more extensive, fitting with their belief that they are fighting while already dead. They emphasise the use of stealth tactics and speed in combat.
Doom Griffons Unknown Unknown The Doom Griffons is a Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is known about this Chapter in the Imperial records, except that it has participated in the pacification of the Fenris System that was caught in a daemonic incursion.
Doom Legion Ultramarines Unknown The Doom Legion is a Loyalist Space Marine Chapter and a Successor Chapter of the Ultramarines, created during an unknown Founding. The Doom Legion is responsible for the maintenance and garrison of the Faithful's Deliverance, the pre-Horus Heresy star fortress that overlooks the notorious Elusian Maze asteroid fields. Few other Space Marine Chapters could boast of spaceborne firepower of such magnitude as the Doom Legion.
Doom Warriors Unknown Unknown The Doom Warriors is a Codex Astartes-compliant Loyalist Space Marine Chapter of unknown Founding and origin. The Doom Warriors have a defect in the Catalepsean Node as a result of a mutation in their gene-seed. Because of this deficiency, Doom Warriors are incapable of true sleep, which in turn makes them a morose, moody Chapter. This is why they specialise in conducting Exterminatus campaigns that allow them to unleash the full extent of their somewhat unbalanced personalities in ways that are constructive.
Doomsayers Unknown Unknown The Doomsayers is a Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is known about this Chapter in the Imperial records, except that it has participated in the First and the Second Punisher Wars against the vile Punishers Chaos Space Marine Warband.
Dragon Lords Unknown Unknown The Dragon Lords is a Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is known about this Chapter in Imperial records. In 998.M41 all contact was lost with the Dragon Lords' Chapter planet, Erwynn's World. This bodes ill for the Dragon Lords until their ultimate fate can be determined.

E

Name Origin Founding Notes
Eagle Warriors Ultramarines Second Founding The Eagle Warriors is a fleet-based Progenitor (Second Founding) Successor Chapter of the Ultramarines Legion. Since the Eagle Warriors is a fleet-based Chapter with no permanent homeworld on which to build its fortress-monastery, it is continually on campaign to defend those star systems originally conquered by Roboute Guilliman during the Great Crusade. Within the Mythos Angelica Mortis, the great work concerning the Space Marines of the latter part of the 37th Millennium, the Eagle Warriors are listed as the immediate forebears of the Marines Errant, although why they were singled out for the honour of a "named" Founding (23rd Founding) being drawn from their ranks at this time remains lost to posterity.
Ebon Knights Unknown Unknown The Ebon Knights was a Loyalist Space Marine Chapter of unknown origin and Founding. Virtually nothing is known about this reclusive Chapter other than that it participated in the notable campaign upon the industrial world of Iriad IV, where it fought a brutal action against a warband of the World Eaters Traitor Legion. The battle against these Khornate Berserkers resulted in the mutual destruction of both forces and the corruption of the Ebon Knights' sole survivor by the Blood God Khorne.
Emperor's Claws Unknown Unknown The Emperor's Claws is a Loyalist Space Marine Chapter of unknown Founding and origin. It possesses Primaris Space Marines within its ranks. Almost nothing is known about this Chapter in Imperial records.
Emperor's Hands Unknown Unknown The Emperor's Hands is a Codex Astartes-compliant Space Marine Chapter of unknown origin and Founding. Nothing else is currently known about it in Imperial records.
Emperor's Hawks Unknown Unknown The Emperor's Hawks is a Codex Astartes-compliant Space Marine Chapter of unknown origin and Founding. Nothing else is currently known about it in Imperial records.
Emperor's Scythes Unknown Unknown The Emperor's Scythes is a Codex Astartes-compliant Space Marine Chapter of unknown origin and Founding. Nothing else is currently known about it in Imperial records.
Emperor's Shadows Iron Hands Unknown The Emperor's Shadows is a Successor Chapter created using the gene-seed of the Iron Hands during an unknown Founding. Nothing else is currently known about it in Imperial records.
Emperor's Shields Unknown Unknown The Emperor's Shields is a Codex Astartes-compliant Space Marine Chapter of unknown origin and Founding. Nothing else is currently known about it in Imperial records.
Emperor's Spears Unknown Unknown The Emperor's Spears is a Loyalist Space Marine Chapter of unknown Founding and origin that hails from the feral Ocean World of Nemeton. It was one of three Chapters that made up the Sentinels of the Veil, Astartes guardians who once stood watch over the Imperial worlds located in the backwater region of the galaxy known as Elara's Veil.
Emperor's Storm Unknown Unknown The Emperor's Storm is a Codex Astartes-compliant Space Marine Chapter of unknown origin and Founding. Nothing else is currently known about it in Imperial records.
Emperor's Swords Unknown Unknown The Emperor's Swords is a Loyalist Space Marine Chapter of unknown origin and Founding and the first of two separate Chapters to bear the name. The Chapter was decimated by the forces of the Alpha Legion after 300 standard years of infiltration and subversion on its homeworld of Ghorstangrad. A second Chapter to bear the name, this one settled on the Chapter homeworld of Bellicas, would also be destroyed, this time by the awakening of Necrons beneath the world in 970.M41.
Emperor's Swords (Bellicas) Unknown Unknown The Emperor's Swords is a Loyalist Space Marine Chapter of unknown origin and Founding and the second Chapter to bear the name. The Emperor's Swords were wiped out in 970.M41, when a massive force of Necrons that had just awakened deep beneath their Chapter homeworld of Bellicas assaulted their fortress-monastery and slaughtered every last Emperor's Swords Space Marine over the course of a three-week-long siege.
Emperor's Warbringers Imperial Fists Unknown The Emperor's Warbringers is a Codex Astartes-compliant Space Marine Chapter of an unknown Founding which is a Successor Chapter of the Imperial Fists. This Chapter is known for sometimes making use of camouflage on its vehicles and its personal armour and possesses a reputation as especially brutal combatants against the foes of the Emperor.
Emperor's Wolves Unknown Unknown The Emperor's Wolves is a Loyalist Space Marine Chapter of unknown origin and Founding whose gene-seed contains altered and integrated wolf genes similar to those found in the gene-seed of the Space Wolves, though any further connection between the Chapters remains unknown. The Emperor's Wolves lost their 8th Company in the Warp who reemerged decades later as the warband of Chaos Space Marines known as the Blood Disciples. Nothing else is known about the Chapter in Imperial records.
Emperor's Wrath Unknown Unknown The Emperor's Wrath Space Marines Chapter is based in the Segmentum Solar. It is a Loyalist Chapter of unknown origin and Founding. Its homeworld is in a star system where there are no planets, only asteroids. This system contains three asteroids that have been hollowed out and made into three massive hive cities. This is where the Chapter recruits new members. The Chapter has a deep hatred for xenos like the Tyranids and the Orks. The Emperor's Wrath has purged many Ork-held star systems by Exterminatus. The Chapter has done the same on many worlds that have fallen to the various Tyranid Hive Fleets. Some of the worlds purged still had large numbers of Imperial forces on them. The Chapter Master and the First, Second and Third Company are currently on a crusade against the Forces of Chaos who had occupied a portion of the world of Cadia during Abaddon's 13th Black Crusade though what became of them after the destruction of Cadia remains unknown.
Espandors Unknown Unknown The Espandors is a Codex Astartes-compliant Space Marine Chapter of unknown origin and Founding. Nothing else is currently known about it in Imperial records.
Excoriators Imperial Fists Second Founding The Excoriators is a Codex Astartes-compliant Chapter of Space Marines which is a Second Founding Successor Chapter of the Imperial Fists. An ancient tome of knowledge known as the Mythos Angelica Mortis lists it as one of the twenty Chapters of Astartes founded to make up the Astartes Praeses, an ever-vigilant Space Marine task force assigned to guard the regions of the Imperium surrounding the Eye of Terror. The Excoriators' Chapter homeworld is Eschara in the Segmentum Obscurus.
Excubants Unknown Unknown The Excubants is a Loyalist Space Marine Chapter of unknown origin and Founding. Almost nothing else is currently known about it in Imperial records.
Execrators Unknown Unknown The Execrators is a Loyalist Space Marine Chapter of unknown origin and Founding. Almost nothing else is currently known about it in Imperial records.
Executioners Imperial Fists Third Founding The Executioners is a savage Third Founding Successor Chapter of the Imperial Fists created according to Imperial records in the first year of the 32nd Millennium. The Executioners was one of four formerly Loyalist Space Marine Chapters that rebelled against the Imperium of Man's authority during the Badab War. The Chapter was believed to have found itself on the wrong side of that conflict through little fault of its own, and was eventually permitted to continue in its service to the Imperium after a 100 year penance crusade.
Exemplars Unknown Unknown The Exemplars is a Loyalist Space Marine Chapter of unknown origin and Founding. Almost nothing else is currently known about it in Imperial records.
Exorcists Grey Knights 13th Founding The Exorcists Chapter was created during the 13th Founding, the so-called "Dark Founding" which occurred sometime between the 35th and 36th Millennia, before the start of the Age of Apostasy. The Exorcists were founded as part of a highly-classified Imperial experiment to create Space Marines who were unusually resistant to daemonic possession and Chaotic corruption because as part of their initiation into the Chapter they had actually been forced to serve as daemonhosts for a short time before having the creature expelled back to the Warp by the intervention of an Inquisitor.
Exsanguinators Blood Angels Unknown The Exsanguinators is a Loyalist Space Marine Successor Chapter of the Blood Angels, created during an unknown Founding. Almost nothing is known about this Chapter in Imperial records. Created as they were from the Blood Angels' gene-seed, the Exsanguinators too, carry the genetic flaws inherited from Sanguinius. Like many of their contemporary Successor Chapters founded in later centuries, the Exsanguinators were greatly affected by the Black Rage and like the Flesh Eaters, they too, are a shrinking Chapter as the flaw begins to whittle down their numbers.

F

Name Origin Founding Notes
Falling Star Unknown Unknown The Falling Star is a Loyalist Space Marine Chapter of unknown Founding and origin. Nothing else is currently known about it in Imperial records.
Fire Angels Ultramarines 25th Founding The Fire Angels is a Loyalist Space Marines Chapter created during the 25th Founding of the 40th Millennium from the gene-seed of the Ultramarines. The Fire Angels are best remembered in Imperial records for the role they played in the recent Badab War, a rebellion by several Space Marine Chapters against the Imperium of Man.
Fire Claws Ultramarines ann Dark Angels (suspected) Unknown The Fire Claws was a Loyalist Space Marine Chapter raised in the 36th Millennium, though of an unknown origin and Founding. It is thought that the Fire Claws were founded during the dark days of the Age of Apostasy. They are believed by some to be a Successor Chapter of both the Ultramarines and the Dark Angels. They were founded as one of the 20 Chapters of the Astartes Praeses, created by the Imperium of Man specifically to guard against the threat of the Traitor Legions attacking from the Eye of Terror. Following the events aboard the Space Hulk designated the Captor of Sin, the Fire Claws became convinced that they could wield the weapons of Chaos against itself. They soon embarked on a Crusade to explore the worlds around the Eye of Terror to uncover more Chaotic relics. Over the decades that followed, many such artefacts were discovered and the Fire Claws Chapter became known instead as the Relictors. Eventually, their obsession with obtaining Chaos weaponry was discovered, and for their blasphemy, they were declared Excommunicate Traitoris by order of the Holy Ordos of the Inquisition.
Fire Hawks Ultramarines (Unconfirmed) 21st Founding The Fire Hawks is one of the Loyalist Space Marine Chapters created in the 36th Millennium during the 21st Founding or "Cursed Founding". While the Fire Hawks have always maintained they were forged from the genestock of the Ultramarines, the sons of Roboute Guilliman have never acknowledged any kinship, fuelling suspicions as to their true heritage. They have the dubious distinction of being one of the few Chapters of the Adeptus Astartes to have lost not one but two Chapter homeworlds. After being nearly driven to extinction during the Badab War, the Fire Hawks' mobile fortress-monastery, the ancient Void Fortress Rapturous Rex and their entire Chapter fleet, was lost in the Warp in 963.M41. It is now believed that the survivors of this disaster became the cursed Astartes known collectively as the Legion of the Damned.
Fire Lords Imperial Fists (suspected) Unknown The Fire Lords is a Codex Astartes-compliant Loyalist Space Marines Chapter. Its Founding date has not been officially established. There is no definite information on what Chapter's gene-seed was used in the Fire Lords' creation. There are several theories on the subject, though it is generally believed by most savants of the Administratum that the Imperial Fists are the true source of the Fire Lords' gene-seed. The Fire Lords' homeworld is the volcanic planet of Mundus Pyra. As their name might suggest, the Fire Lords are known for their utilisation of all manner of incendiary weapons, from hand-held Flamer units all the way up to Firestorm bombardment charges delivered from low orbit.
Fists Exemplar Imperial Fists Second Founding The Fists Exemplar is a Second Founding Successor Chapter of Imperial Fists lineage. This Chapter was initially composed of the more progressive Imperial Fists Legionaries, who agreed with the views of Roboute Guilliman, the Primarch of the Ultramarines, that it was necessary for the Legiones Astartes to be broken down into smaller existing formations, known as Chapters, following the disastrous and costly Horus Heresy. Never again, would one individual wield the power of a Space Marine Legion. It was Captain Oriax Dantalion who wisely counseled Primarch Rogal Dorn on the need for such drastic measures. Though he initially disagreed with the Captain's opposing viewpoints, he eventually relented, and agreed to have his Legion broken into separate Chapters. Captain Dantalion was chosen to become the first Chapter Master of one of these newly created Chapters, and deemed the new Chapter Master and those that followed him, as exemplars of a new order, and so, the Primarch named this new Chapter the Fists Exemplar.
Flame Eagles Raven Guard (Unconfirmed) Unknown The Flame Eagles is a Loyalist, Codex Astartes-compliant Space Marine Chapter. It is suspected that it is one of the rare Successor Chapters of the Raven Guard. Its exact Founding date is unknown. Unfortunately, at this time almost nothing is currently known about the Chapter in Imperial records beyond its name and Chapter appearance.
Flame Falcons Unknown 21st Founding The Flame Falcons was one of the cursed Space Marine Chapters created during the 21st Founding or so-called "Cursed Founding". Although the earlier successes promised a great future for the Chapter, it was almost completely wiped out by the Inquisition before a hundred years had passed following its Founding. The cause of the Inquisition's attack was that during an engagement, members of the Chapter had burst into flame. These Astartes came to no harm, and believed the flames to be a gift from the Emperor of Mankind, so they fought with a fierce savagery that won the day. The members of the Inquisition did not share the Chapter's belief that they had been blessed by the Emperor, and when the Chapter returned to its homeworld of Lethe to celebrate its victory, it was attacked and almost completely destroyed by a force of Grey Knights who believed the Flame Falcons to have been possessed by daemons.
Flesh Eaters Blood Angels Third Founding The Flesh Eaters ís an infamous Loyalist Successor Chapter of the Blood Angels Legion created during the Third Founding in the 32nd Millennium. This ruthless Chapter's unsavoury reputation is infamous across the Imperium of Man, as are the bloody deeds purported to have been enacted by its Battle-Brothers upon the fields of battle. So divorced have the Flesh Eaters become from the rest of Mankind that most Imperial Commanders embrace the Chapter's offers of assistance only in the direst of circumstances.
Flesh Tearers Blood Angels Second Founding The Flesh Tearers is the smallest Second Founding Successor Chapter of the Blood Angels, numbering only four full companies of Astartes. They are Loyalists of the Emperor of Mankind though their heavy affliction with the flaws of their Primarch Sanguinius has led to their investigation on charges of heresy by the Inquisition. They have been cleared of suspicion at present. Like their progenitors, the Flesh Tearers are known for their bloodthirsty nature in battle, bad temper and feared for the flaws like the Black Rage and the Red Thirst that they carry within their gene-seed.
Fulminators Ultramarines Ultima Founding The Fulminators is a Loyalist Space Marine Chapter comprised entirely of Primaris Space Marines, created from the lineage of the vaunted Ultramarines and raised during the Ultima Founding of 999.M41. These gene-crafted warriors are the key components of the resurrected Primarch's Indomitus Crusade to reclaim the galaxy for Mankind.

G

Name Origin Founding Notes
Genesis Chapter Ultramarines Second Founding The Genesis Chapter is a Second Founding Successor or Primogenitor Space Marines Chapter of the legendary Ultramarines. The Chapter's homeworld is the planet Newfound which is located a comparatively short distance to the galactic northwest of the Ultramarines' Realm of Ultramar. First amongst the Ultramarines' Primogenitor Chapters to be raised (and hence their name), the Genesis Chapter is dogmatically loyal to the Imperium of Man and the memory of its Primarch Roboute Guilliman.
Golden Blades Unknown Unknown The Golden Blades was a Loyalist Space Marine Chapter of unknown Founding and origin. Sometime in the 37th Millennium, a garrison of Golden Blades Space Marines met a most foul fate while defending the world of Ghahalla during a daemonic incursion. Overcome by a strange madness, they slowly succumbed to their madness and were reborn as the first seeds that would become the Khorne Daemonkin warband known as the Brazen Beasts.
Golden Gryphons Unknown Unknown The Golden Gryphons is a Loyalist Codex Astartes-compliant Chapter of Space Marines of unknown Founding and origin. Nothing else is currently known about it in Imperial records.
Golden Halos Unknown Unknown The Golden Halos is a Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is known about this Chapter in the Imperial records.
Golden Paladins Unknown Unknown The Golden Paladins is a Loyalist Space Marine Chapter of unknown Founding and origin. The Chapter's homeworld of Lynoxis fell to the 7th Plague Company of the Death Guard Traitor Legion, led by the Daemon Primarch Mortarion himself, after the birth of the Great Rift. Little else is known about this Chapter in current Imperial records.
Golden Sons Blood Angels Unknown The Golden Sons is a now-extinct Successor Chapter of the Blood Angels, created during an unknown Founding. Almost nothing is known about this Chapter in Imperial records. It was known for taking a much harsher stance for those Battle-Brothers afflicted by the Black Rage, as it hurled its Death Company into battle with no concern for their lives, using them as blunt instruments to break the enemy's front lines. The Golden Sons were fatally undone by the genetic curse of the Black Rage.
Gorgons Unknown Unknown The Gorgons is a Loyalist Chapter of Codex Astartes-compliant Space Marines of unknown Founding and origin. Nothing else is currently known about it in Imperial records.
Graven Fists Unknown Unknown This Chapter undertook the disastrous Abyssal Crusade in 321.M37 into the Eye of Terror, where it was corrupted by Chaos, and became the warband of Chaos Space Marines known as the Twisted Blades. Declared Excommunicate Traitoris.
Graven Spectres Unknown Unknown The Graven Spectres was a formerly Loyalist Space Marine Chapter of unknown Founding and origin. In 365.M41, the Renegade Chapter assaulted the relic world of Syban, intent on plundering its great stasis museum. During its rampage it unwittingly released the Daemon Prince Knor from his millennia-long slumber.
Grey Knights Emperor of Mankind Unknown The Grey Knights is a secret, mysterious Loyalist Chapter of Space Marines specifically tasked with combating the dangerous daemonic entities of the Warp and all those who wield the corrupt power of the Chaos Gods. It has the honour of being implanted with gene-seed engineered directly from the genome of the Emperor Himself. The Grey Knights act as the military arm or Chamber Militant of the Ordo Malleus, the Daemonhunters who form the oldest branch of the virtually omnipotent Inquisition. Unlike other Astartes, every Grey Knight is a potent psyker.
Grey Slayers Unknown Unknown The Grey Slayers is a Loyalist Space Marines Chapter of unknown origin and Founding that became corrupted by Chaos. Inquisitor Thrax purged the Chapter of mutants and daemons, and the Chapter Master took his own life in shame. Untainted officers were raised up to lead the Chapter. The purge was apparently not quite thorough enough, as Inquisitor Thrax himself was soon afterwards corrupted by the Ruinous Powers and transformed into some sort of daemonic Chaos beast. The Grey Slayers' eventual disposition and fate remains unknown in current Imperial records.
Grief Bringers Unknown Unknown The Grief Bringers is a Loyalist Space Marine Chapter of unknown origin and Founding that suffered heavy losses fighting against the Warp entities called Enslavers on the world of Valhall II. Its armour is described as "principally a sickly pea-green, with engrailed chevrons of headachey purple."
Griffon Lords Unknown Unknown The Griffon Lords is a Loyalist Space Marine Chapter of unknown Founding and uncertain origin. This Chapter is a rare example where its Astartes' beliefs are in conflict with official Administratum records, as they claim to be descended from the Ultramarines' Primarch Roboute Guilliman, even though official data-files show that their ancestry is that of Jaghatai Khan's White Scars. There is little else known about this Chapter in current Imperial records.
Guardians of Celeres Unknown Unknown The Guardians of Celeres is a Loyalist Codex Astartes-compliant Space Marine Chapter of unknown Founding and origin. Nothing else is currently known about it in Imperial records.
Guardians of the Covenant Dark Angels Unknown The Guardians of the Covenant is a Successor Chapter of the Dark Angels, of an unknown Founding. This Chapter is as dedicated to the scholarly arts as to the ways of war. Masters of both, the Battle-Brothers of this Chapter use their keen intellects as a weapon as sharp as their Chainswords. The Chapter's Astartes study the teachings of the Emperor and of their Primarch Lion El'Jonson in minute detail, attaining a unique perspective on the object of their diligent studies. Every shred of ancient wisdom is absorbed, debated and analysed, so that no ruse or stratagem is beyond the Guardians of the Covenant, and none may better them on the field of battle.

H

Name Origin Founding Notes
Halo Brethren Unknown Unknown The Halo Brethren is a Loyalist Codex Astartes-compliant Space Marine Chapter of unknown Founding and origin. Almost nothing is known about this Chapter in Imperial records, except for its involvement in the campaign against the rebellious Grand Master Drakan Vangorich of the Officio Assassinorum.
Halo Dragons Unknown Unknown The Halo Dragons is a Loyalist Space Marine Chapter of unknown origin and Founding which played an instrumental role in containing the Tau's Third Sphere Expansion during the Zeist Campaign of 999.M41. Little else is known about it in Imperial records.
Hammers of Dorn Imperial Fists Unknown The Hammers of Dorn is a Codex Astartes-compliant Space Marine Chapter, raised from the gene-seed of Rogal Dorn as a Successor Chapter of the Imperial Fists during an unknown Founding. It is a stringent adherent of the Codex, fostering a great rivalry with the Ultramarines and their Successor Chapters whenever those Battle-brothers do not match their own militant standards.
Hammers of Retribution Unknown Unknown The Hammers of Retribution is a Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is known about this Chapter in Imperial records.
Harbingers Unknown Unknown The Harbingers is a Loyalist Codex Astartes-compliant Space Marine Chapter of unknown Founding and orign. Almost nothing is known about this Chapter in Imperial records.
Hawk Lords Ultramarines Unknown The Hawk Lords is a Codex Astartes-compliant Loyalist Chapter of Space Marines and a Successor Chapter of the vaunted Ultramarines raised during an unknown Founding. The Hawk Lords heavily favour the use of their various gunships, and so are unsurprisingly the undisputed masters of aerial combat amongst the Adeptus Astartes. So skilled are they in the use of such tactics that the Astartes pilots of other Loyalist Chapters have been known to spend time as pilots in one of the Hawk Lords' Talon Wings to gain the aeronautical skills displayed by the Hawk Lords.
Helion Legion Ultramarines Unknown The Helion Legion is a Loyalist Space Marine Chapter of Ultramarines lineage created during an unknown Founding. Raised as it was from the vaunted lineage of Roboute Guilliman, the Helion Legion was founded to provide guardians for the furthest-flung Imperial worlds at the very edge of the galaxy. Due to this isolation, the Helion Legion is often forced to confront those Imperial worlds who attempt to break away from Terra altogether as well as the omnipresent threat of Orks. Many fringe worlds have also begun to display signs of Necron awakenings as well. Currently, the Helion Legion is defending the isolated Industrial World of Arkalli from multiple invasions by both the Orks and Nurgle's Plague Marines. Almost nothing else is known about this Chapter in official Imperial records.
Heralds of Ultramar Ultramarines Unknown The Heralds of Ultramar is a Codex Astartes-compliant Chapter derived from the Ultramarines gene-seed. Its exact Founding date is unknown. Virtually nothing else is known about this Chapter in current Imperial records.
Heralds of Vengeance Unknown Unknown The Heralds of Vengeance is a Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is known about this Chapter in current Imperial records.
Honoured Sons Unknown Unknown The Honoured Sons is a Codex Astartes-compliant Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is known about this Chapter in the Imperial records except for the name of its homeworld of Jonol, located in the Eastern Fringes of the Segmentum Ultima. The Honoured Sons believe they are descended from the Imperial Fists' Primarch Rogal Dorn, and whilst no evidence exists to the contrary, neither do the Imperial Fists officially acknowledge them as a Successor Chapter.
Hospitallers Unknown Unknown The Hospitallers is a non-Codex Astartes-compliant Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is known about this Chapter in current Imperial records.
Hounds of Demos Unknown Unknown The Hounds of Demos is a Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is known about this Chapter in the Imperial records.
Howling Griffons Ultramarines Unknown The Howling Griffons is a Loyalist Space Marine Chapter founded in M33 from the gene-seed of the Ultramarines. It fought in the Badab War and saw extensive action in the 13th Black Crusade, fighting against Chaos Plague Marines in the defence of the world of Amistel Majoris. The Howling Griffons take a special pride in their oaths, seeing each as the promise of an unending effort until the deed sworn in the oath is accomplished or the oathtaker has been slain in the trying.

I

Name Origin Founding Notes
Illustrians Unknown Unknown This Chapter undertook the disastrous Imperial Abyssal Crusade into the Eye of Terror in 321.M37, where it was corrupted by the Ruinous Powers and eventually became the Chaos Space Marine Warband known as The Black Psalm.
Immortal Hearts Unknown Unknown The Immortal Hearts is a Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is known about this Chapter in Imperial records.
Imperial Castellans Unknown Unknown The Imperial Castellans is a Codex Astartes-compliant Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is currently known about this Chapter in Imperial records.
Imperial Fists N/A First Founding The Imperial Fists is one of the First Founding Chapters of the Space Marines and was originally the VII Legion of the Legiones Astartes raised by the Emperor Himself from across Terra during the Unification Wars. The Imperial Fists stand out from other Space Marine Chapters since it possesses no fixed homeworld, although it is most frequently based on Terra. Instead, the Imperial Fists rely on their 10,000-year-old mobile space fortress, Phalanx, to serve as their mobile fortress-monastery.
Imperial Harbingers Unknown 23rd Founding The Imperial Harbingers is a Loyalist Space Marine Chapter of unknown origin, created during the 23rd Founding, the so-called "Sentinel" Founding, in M37. This Chapter hails from the world of Birmingham, "the Black Planet," so named because it receives very little visible light. The Imperial Harbingers are specialists at drop assaults.
Imperial Hawks Unknown Unknown The Imperial Hawks is a Loyalist Space Marine Chapter of unknown origin and Founding. It specialises in fast attacks from the air, utilising high-altitude Jump Pack-assisted assaults, followed by reinforcement sorties from squadron-strength units of Land Speeders, often dropped at altitude and at high-speed from Thunderhawk gunships. Almost nothing else is known about the Chapter in Imperial records.
Imperial Paladins Unknown Unknown The Imperial Paladins is a Loyalist Codex Astartes-compliant Space Marine Chapter of unknown origin and Founding. Nothing else is currently known about it in Imperial records.
Imperial Ravagers Unknown Unknown The Imperial Ravagers is a little known Loyalist Space Marine Chapter. Its fortress-monastery is a space station that orbits the world of Vindict V. Sometime during M41, it was summoned by the Inquisition to perform an Exterminatus upon the Genestealer-infested planet of Stalinvast.
Imperial Stars Unknown Unknown The Imperial Stars is a Codex Astartes-cimpliant Space Marine Chapter. There have been suspicions of Chaotic taint among the Imperial Stars. A team from the Inquisition's Ordo Hereticus has been sent to assess the extent of the threat, if any. Nothing else is known about the Chapter in current Imperial records.
Imperial Talons Raven Guard (suspected) Unknown The Imperial Talons is a Loyalist, Codex Astartes-compliant Space Marine Chapter. It is suspected that it is one of the rare Successor Chapters of the Raven Guard. Almost nothing else is known about the Chapter in current Imperial records.
Imperius Reavers Ultramarines 4th Founding The Imperius Reavers is a Fourth Founding Successor Space Marine Chapter of the legendary Ultramarines, created sometime during M32 or M33. The Chapter's homeworld is the Hive World of Praedis Zeta, located in the Vidar Sector, which is further located in the farthest edge of the Eastern Fringe. This volatile region is under constant siege by the twin threats of both xenos and the daemon.
Inceptors Ultramarines Second Founding The Inceptors is a Loyalist Codex Astartes-compliant Space Marine Chapter. It is a Second Founding Successor Chapter of the Ultramarines Legion. Little is known of this Chapter's history within the Imperial archives, except its participation in the Macharian Crusade, and its involvement in a regrettable incident during the Macharian Heresy in the early years of M41.
Inculcators Unknown Unknown The Inculcators is a Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is known about this Chapter in the Imperial records.
Interceptors Unknown Unknown The Interceptors is a Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is known about this Chapter in current Imperial records.
Invaders Imperial Fists Unknown The Invaders is a Loyalist Codex Astartes-compliant Space Marines Chapter of unknown Founding and a Successor Chapter of the Imperial Fists. Its Chapter homeworld of Ogrys was lost to an assault by the Eldar of Craftworld Alaitoc approximately a standard century ago and the Invaders have been forced to become a fleet-based Chapter while they rebuild their strength from the heavy losses they suffered against the vengeful xenos.
Invictors Unknown Unknown The Invictors was a formerly Loyalist Space Marine Chapter of unknown Founding and origin. It was corrupted after entering the Eye of Terror in 321.M37 as part of the Imperial Abyssal Crusade. It is unknown what it endured during its sojourn into the Eye, but by the time it made its way back into realspace, it had become a Chaos Space Marine warband known as The Unhallowed.
Inviolators Unknown Unknown The Inviolators is a Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is known about this Chapter in current Imperial records.
Iron Champions Executioners Unknown The Iron Champions is a Space Marine Chapter that is a Successor Chapter of the brutal Executioners. For their role in combating the apostates and traitors of the Plague of Unbelief in M36, the Executioners were granted the rare honour of having a new Chapter, the Iron Champions, being created from their gene-seed in a later Founding.
Iron Crusaders Unknown Unknown The Iron Crusaders is a Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is known about this Chapter in Imperial records. The Iron Crusaders were last seen in 998.M41 heading towards the forbidden region of space known as the Ghoul Stars.
Iron Drakes Unknown Unknown The Iron Drakes was once a Loyalist Chapter of Space Marines which was corrupted after entering the Eye of Terror in 321.M37 as part of the disastrous Abyssal Crusade. At some point during their sojourn in the Eye, the Iron Drakes were corrupted by Nurgle on the Daemon World of Anathrax and became the Grey Death, ready and willing to spread their plague across the stars.
Iron Fists Imperial Fists 22nd Founding The Iron Fists is a Codex Astartes-compliant Loyalist Chapter which is a Successor Chapter of the Imperial Fists, formed in M37 during the 22nd Founding. Nothing else is known about this Chapter in current Imperial records.
Iron Hands N/A First Founding The Iron Hands is a Loyalist Space Marine Chapter and one of the original First Founding Space Marine Legions created from the gene-seed of its martyred Primarch, Ferrus Manus. When the Horus Heresy erupted, the Iron Hands were nearly annihilated during the Dropsite Massacre of Istvaan V and their Primarch was slain by the traitorous Fulgrim, Primarch of the Emperor's Children. Since that time, the Iron Hands have grown to believe that human flesh is weak and easily corruptible, and strive to replace their organic bodies with more "pure" bionic substitutes, thus closely emulating the faith of the Adeptus Mechanicus' Cult of the Machine.
Iron Hawks Unknown Unknown The Iron Hawks is a Codex Astartes-compliant Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is known about this Chapter in current Imperial records.
Iron Hearts Unknown Unknown The Iron Hearts is an obscure Loyalist Space Marine Chapter of unknown Founding and origin. Its supposed Primarch is mentioned in Imperial records as "Primarch Rubineck". This is now believed to be a transcription error by an unwitting scribe of the Administratum who was actually referring to the Iron Hearts' Chapter Master.
Iron Knights Imperial Fists Second Founding The Iron Knights is a Second Founding Successor Chapter of the Imperial Fists. The Iron Knights was one of the many Loyalist Space Marine Chapters who participated in the defence of Cadia from Abaddon the Despoiler's offensive during the 13th Black Crusade. Nothing else is known about this Chapter in current Imperial records.
Iron Lords Iron Hands Unknown The Iron Lords is a rare Successor Chapter of the venerable Iron Hands Chapter, created in M38 during an unknown Founding. It has gone on to play major roles in combating aggressive xenos species including the Barghesi, the Tyranids and the Tau. Nothing else is currently known about this Chapter in current Imperial records.
Iron Ravens Raven Guard Second Founding The Iron Ravens was a Loyalist Codex Astartes-compliant Space MarineChapter of the Second Founding and a Successor Chapter of the Raven Guard. Very little is known about this Chapter in Imperial records, save that its forces were presumed to be lost on the world of Taltos.
Iron Shield Unknown Unknown The Iron Shield is a Loyalist Space Marine Chapter of unknown Founding and origin. Much of this obscure Chapter's history has been lost and is not recorded in current Imperial records.
Iron Snakes Ultramarines Second Founding The Iron Snakes is a Second Founding Loyalist Space Marine Chapter of the Ultramarines, though it is not a Codex Astartes-compliant Chapter. The Iron Snakes take their name from the giant sea serpents called Water Wyrms that inhabit their homeworld of Ithaka's vast oceans. The Iron Snakes Chapter's primary task is to guard a cluster of Imperial solar systems known as the Reef Stars close to their homeworld of Ithaka, which are infrequently plagued by Orks, and more frequently by the Dark Eldar. The Iron Snakes was one of the many Space Marine Chapters who participated in the defense against the Forces of Chaos during the 13th Black Crusade.
Iron Talons White Scars Unknown The Iron Talons is a Loyalist Space Marine Chapters that was created from White Scars gene-stock during an unknown Founding. It was founded as part of the Astartes Praeses -- one of the 20 Chapters of Astartes mentioned in the ancient tome known as the Mythos Angelica Mortis that was created to defend the regions surrounding the Eye of Terror in the Segmentum Obscurus from the Forces of Chaos.

J

Name Origin Founding Notes
Justicars Unknown Unknown The Justicars was a formerly Loyalist Space Marine Chapter of unknown origin and Founding. In 321.M37, it took part in the disastrous Abyssal Crusade and became corrupted after entering the Eye of Terror. It emerged centuries later back into realspace, having become the Chaos warband known as The Fractured.

K

Name Origin Founding Notes
Knights Cerulean Ultramarines Ultima Founding The Knights Cerulean is a Loyalist Space Marine Chapter comprised entirely of Primaris Space Marines, created from the lineage of the Ultramarines and raised during the Ultima Founding of 999.M41. The Knights Cerulean were originally members of the Unnumbered Sons who accompanied Lord Commander of the Imperium Roboute Guilliman to the Realm of Ultramar as part of the Indomitus Crusade and took part in the Plague Wars. The Chapter was created after the end of the Indomitus Crusade in early M42 and its numbers were originally drawn from the remaining Unnumbered Sons of Ultramarines' descent. These were the nine Legion-sized forces which comprised half of the Primaris Space Marines created during the Ultima Founding who were not placed within the normal Adeptus Astartes Chapter structure.
Knights Excelsior Unknown Unknown The Knights Excelsior was a formerly Loyalist Space Marine Chapter of unknown origin and Founding. In 321.M37, it took part in the disastrous Abyssal Crusade into the Eye of Terror. When the Knights Excelsior finally emerged back into Realspace, they had been refashioned into the Renegade Warband known as the Magma Hounds.
Knights of Dorn Imperial Fists Unknown The Knights of Dorn is a Codex Astartes-compliant Loyalist Space Marine Chapter of unknown Founding. It was created from the gene-seed of the Imperial Fists. Almost nothing is known about this Chapter in current Imperial records.
Knights of Eternity Unknown Unknown The Knights of Eternity was a Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is known about this Chapter in Imperial records. In 990.M41, Hive Fleet Kraken attacked across a large front of Imperial space. The Knights of Eternity was one of several Space Marine Chapters which dedicated their forces to saving the worlds that other Imperial armies had abandoned, selling their lives dearly in the defence of the Imperium. It is presumed to have been completely obliterated.
Knights of Gryphonne Unknown Unknown The Knights of Gryphonne is a Codex Astartes-compliant Chapter of unknown origin and Founding. Nothing else is known about this Chapter in current Imperial records.
Knights of the Chalice Blood Angels Ultima Founding The Knights of the Chalice is a Loyalist Space Marine Chapter comprised entirely of Primaris Space Marines, created from the lineage of the noble Blood Angels and raised during the Ultima Founding of 999.M41. These gene-crafted warriors are the key components of the resurrected Primarch's Indomitus Crusade to reclaim the galaxy for Mankind.
Knights of the Crimson Order Dark Angels Unknown The Knights of the Crimson Order is a Successor Chapter of the Dark Angels Space Marine Chapter. Almost nothing is known about the Knights of the Crimson Order in Imperial records save that they exist and that they too are numbered amongst the ranks of the Unforgiven.
Knights of the Flame Unknown Unknown The Knights of the Flame is a Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is known about this Chapter in Imperial records.
Knights of the Raven Raven Guard Unknown The Knights of the Raven is a Loyalist Codex Astartes-compliant Space Marine Chapter of an unknown Founding that is a Successor Chapter of the Raven Guard. The Chapter's homeworld is the planet Coralax. In recent history, for unknown reasons, the Knights of the Raven "came to blows" with Astartes from the Aurora Chapter; the resulting conflict was apparently ended by Marneus Calgar of the Ultramarines.
Knights of Thunder Unknown Unknown The Knights of Thunder is a Loyalist Space Marine Chapter comprised entirely of Primaris Space Marines, created from an unknown lineage and raised during the Ultima Founding of ca. 999.M41.
Knights Sanguine Blood Angels Unknown The Knights Sanguine is a Loyalist Space Marine Successor Chapter of the Blood Angels, created during an unknown Founding. Almost nothing is known about this Chapter in Imperial records.
Knights Unyielding Unknown Unknown The Knights Unyielding is a Loyalist Space Marine Chapter of unknown origin and Founding. This Chapter was founded as part of the Astartes Praeses -- one of the 20 Chapters of Astartes mentioned in the ancient tome known as the Mythos Angelica Mortis that was created to defend the regions surrounding the Eye of Terror in the Segmentum Obscurus from the Forces of Chaos.

L

Name Origin Founding Notes
Lamenters Blood Angels 21st Founding The Lamenters is an unfortunate Loyalist Space Marine Successor Chapter of the Blood Angels, created during the 21st Founding, known as the "Cursed Founding". It seems that the gene-seed of the Lamenters is unafflicted by the flaws known as the Black Rage and the Red Thirst through unknown means, but this secret cure may have been lost along with the Chapter at the hands of the Great Devourer. It found itself on the wrong side during the Badab War and was thereafter devastated by the Tyranids.
Lances of Pteros Unknown Unknown The Lances of Pteros was a formerly Loyalist Space Marine Chapter, corrupted after entering the Eye of Terror in 321.M37 as part of the Imperial Abyssal Crusade. At some point during their sojourn in the Eye, the Lances of Pteros were corrupted by Nurgle, becoming the Lords of Decay, and latter absorbed into the Death Guard Traitor Legion. The Lords of Decay appear to function as an elite force within the legion, known to even have been led for a time by the Daemon Primarch Mortarion himself.
Lectors of Ixis Unknown Unknown The Lectors of Ixis was a formerly Loyalist Space Marine Chapter which was corrupted after entering the Eye of Terror in 321.M37 as part of the Imperial Abyssal Crusade. At some point during their sojourn in the Eye, the Lectors of Ixis were corrupted by Tzeentch, becoming the Oracles of Change. They are led by the Chaos Sorcerer Amadeus Volkstein, who was once a Loyalist Librarian Epistolary known as Vanneus before being corrupted by the promise of knowledge and power offered by the Lord of Change.
Legion of Night Unknown Unknown The Legion of Night is a Loyalist Codex Astartes-compliant Space Marine Chapter of unknown origin and Founding. This Chapter hails from the world of Outrenacht. The only thing known with any certainty about these Astartes is that the Legion of Night's combat doctrine revolves around the use of Tactical Squads that utilise the Chapter's large pool of armoured transports. These are used to perform surgical strikes or seize strategic points with the aid of fast-moving Razorbacks or Rhinos. Like its fellow Chapters the Angels of Fury and the Raven Guard, the Legion of Night has forged its combat doctrine around such highly mobile insurgent tactics.
Legion of the Damned Fire Hawks 21st Founding The Legion of the Damned is the most famous of the Chapters of the 21st Founding, known as the "Cursed Founding", and was once known as the Fire Hawks. The Fire Hawks was listed officially destroyed as a Chapter in Imperial records even though some of its members sometimes appear on Imperial battlefields as the Legion of the Dead when the situation for other Imperial forces is dire, and their intervention turns the tide of battle. Many claim to have seen these living spectres in battle, but no thanks can ever be given to them, for they leave as suddenly and as quickly as they appear.
Libators Ultramarines Second Founding The Libators is a Codex Astartes-compliant Space Marine Chapter which is a Second Founding Successor Chapter of the Ultramarines. Nothing else is currently known about this Chapter in Imperial records.
Liberators Unknown Unknown The Liberators is a Codex Astartes-compliant Space Marine Chapter of unknown origin and Founding. Nothing else is known about this Chapter in current Imperial records.
Lion Warriors Unknown Unknown The Lion Warriors is a Codex Astartes-compliant Space Marine Chapter of unknown origin and Founding. Nothing else is known about this Chapter in current Imperial records.
Lions Defiant Unknown Unknown The Lions Defiant is a Loyalist Codex Astartes-compliant Space Marine Chapter of unknown Founding and origin. Almost nothing is known about this Chapter in Imperial records. In 992999.M41, a massive event known as the Night of a Thousand Rebellions occurred. Uprisings and discord struck countless planets across the Imperium. Contact was lost with large swathes of the Segmentum Pacificus. The homeworld of the Lions Defiant Space Marine Chapter was lost to the anarchy caused by the coordinated activity of secret Chaos Cults and frenetic agitators.
Lions Sable Dark Angels Second Founding The ill-fated Lions Sable Space Marine Chapter was the last of the Second Founding Successor Chapters of the Dark Angels. During the unspoken period of history known as the Forgotten Wars (580.M31-632.M32), the Lions Sable was completely annihilated during a disastrous campaign into the Eye of Terror whilst in pursuit of the notorious Fallen known as Cypher. Its subsequent fate and entire Chapter history was deliberately destroyed by the Dark Angels. Ironically, by M33, when the great and holy document known as the Apocrypha of Davio was written in an attempt to list all of the known Second Founding Chapters, the name Lions Sable had already been lost.
Lionguard Unknown Unknown The Lionguard was a formerly Loyalist Space Marine Chapter which was known to specialise in the use of sabotage and terror tactics against its foes. It was corrupted after entering the Eye of Terror in 321.M37 as part of the Imperial Abyssal Crusade. At some point during its sojourn in the Eye, the Lionguard was corrupted by Chaos, and when it returned to realspace centuries later, it had become the Chaos warband known as the Death Shadows.
Lords of Wrath Unknown Unknown The Lords of Wrath is a Loyalist Space Marine Chapter of unknown origin and Founding. Almost nothing about it is known in Imperial records. The Lords of Wrath are recorded as having participated in the capture of Decius Mus, the Arch-Heretic of Auscum, with assistance from the 23rd Bruttiam Regiment of the Imperial Guard.

M

Name Origin Founding Notes
Malevolent Unknown Unknown The Malevolent is a Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is known about this Chapter in current Imperial records.
Mantis Warriors Marauders 8th Founding The Mantis Warriors, originally known as the Mantis Legion, is a Loyalist Space Marine Chapter believed to have been founded as part of the 8th Founding in 598.M35, created to help relieve the White Scars in monitoring and countering the many threats harboured by the Maelstrom Warp Storm in the Ultima Segmentum. It eventually was ordered by the High Lords of Terra to become part of an alliance of three Space Marine Chapters known as the Maelstrom Warders that also included the Astral Claws and the Lamenters. The Mantis Warriors was one of the three Astartes Chapters that joined the Astral Claws in rebelling during the Badab War. For its sins, it was required to give up its homeworld and pursue the Emperor's forgiveness by defending the Imperium from its fleet without recruiting new members until its penance had been earned and its disgrace erased. After a century, this restriction was raised after the Mantis Warriors proved critical in throwing back the attack of a Tyranid splinter Hive Fleet from the strategically-placed Imperial world of Herodian IV.
Marauders White Scars Second Founding The Marauders is a Loyalist Second Founding Successor Chapter of the White Scars according to the Apocrypha of Davio, written in the 33rd Millennium. Little else is known about it in Imperial records save that the Mantis Warriors Chapter, which grew infamous during the Badab War, was created from the gene-seed stock of the Marauders.
Marines August Unknown Unknown The Marines August is a Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is known about this Chapter in current Imperial records.
Marines Errant Eagle Warriors 23rd Founding The Marines Errant is a Loyalist, fleet-based Space Marine Chapter of unknown origin created late during the 23rd Founding in the 37th Millennium, to repair the gap left in Imperial military forces by the loss of other Chapters. Further details of this Chapter's origins can be found in the Mythos Angelica Mortis, the great work concerning the Space Marines of this age, which lists five such new-founded Crusade Chapters and their blood-progenitors, with the Marines Errant recorded as having the Eagle Warriors as their immediate forebears. The Eagle Warriors' gene-seed was drawn from the Ultramarines' lineage, although why the Eagle Warriors in particular were singled out for the honour of a "named" Founding being drawn from their ranks at this time remains lost to posterity.
Marines Errantor Unknown Unknown The Marines Errantor is a Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is known about this Chapter in current Imperial records.
Marines Exemplar Unknown Unknown The Marines Exemplar is one of the Loyalist Space Marine Chapters founded as part of the Astartes Praeses -- one of the 20 Chapters of Astartes mentioned in the ancient tome known as the Mythos Angelica Mortis that was created to defend the regions surrounding the Eye of Terror in the Segmentum Obscurus from the Forces of Chaos. The Marines Exemplar are of an unknown Founding and origin.
Marines Malevolent Unknown Unknown The Marines Malevolent is a Loyalist Space Marine Chapter of unknown genetic origin founded in the 32nd Millennium. While loyal to the Emperor of Mankind and deeply dedicated to the eradication of all of the Imperium's enemies, it has at times shown a disturbing and callous disregard for the lives of the civilians of the Imperium as long as its mission objectives are obtained, which has brought it into conflict with the Salamanders Chapter as well as many other Imperial organisations, including the Inquisition. The Marines Malevolent take a flippant view in regards to collateral damage and the use of excessive force. If innocent civilians or other Imperial forces happen to die due to their brutal tactics, then so much the better. This Chapter believes there is no such thing as "innocence", simply varying degrees of guilt, and that people who will not fight to defend themselves have no right to live as their freedom was purchased with the blood of others more worthy of the Emperor's blessings.
Marines Mordant Unknown Unknown The Marines Mordant is a Loyalist Space Marine Chapter of unknown Founding and origin. It is currently undergoing a one hundred year long penitent Crusade through the Tempest Hippocrene in recompense for some unknown offence or dishonour. Almost nothing else is known about this Chapter in current Imperial records.
Marines Vindicant Unknown Unknown The Marines Vindicant is a Loyalist Space Marine Chapter of unknown origin and Founding. Almost nothing else is known about the Chapter in Imperial records save that it played a major role in the scouring of the world of Vorlinghast in 981.M41, which had been overrun by Plague Zombies and the Death Guard Traitor Legion.
Masters of Protelus Unknown Unknown The Masters of Protelus is a Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is known about the Masters of Protelus Chapter in current Imperial records.
Mentors Unknown 26th Founding The Mentors, sometimes referred to in Imperial records as the Mentor Legion, is a Loyalist Codex Astartes-compliant Space Marine Chapter of unknown origin created during the 26th Founding in 738.M41, making it one of the most recently founded Chapters in the Imperium of Man. Little is known about this Chapter in Imperial records, though the Mentors is known to be a reclusive and suspicious Chapter of Astartes which no longer trust other Space Marine Chapters or the Imperial government, preferring to work alone and unobserved by all save the foes of Mankind and the Emperor.
Metamarines Ultramarines Unknown The Metamarines is a Loyalist Space Marine Successor Chapter of the Ultramarines created during an unknown Founding. The most renowned action of the Metamarines was their participation in the 13th Black Crusade in 999.M41, where they aided other Imperial forces in the defence against Abaddon the Despoiler and the Forces of Chaos unleashed upon the world of Cadia and its surrounding sectors.
Minotaurs Unknown 21st Founding The Minotaurs is a savage Loyalist Space Marine Chapter whose actual origin and Founding remain unknown. The Space Marine formation by this name at large in the Imperium today appears to bear little resemblance to accounts of its past. That there existed a Loyalist Space Marine Chapter called the Minotaurs, created during the 21st Founding, known as the "Cursed Founding", of the 36th Millennium, is not widely contested in the Imperial record, but whether or not it is the same as the Chapter bearing the name that took part in the suppression of the Macharian Heresy in the opening decades of the 41st Millennium and the same Chapter that would later go on to play a crucial and bloody role in the Badab War and the Orphean War is not so certain. The Minotaurs possess a reputation for being unusually xenophobic Astartes, even for the Imperium, as well as often unreliable combatants who do not work well with other Imperial military units.
Mortifactors Ultramarines Second Founding The Mortifactors is a Loyalist, Codex Astartes-compliant Second Founding Primogenitor Chapter founded during the 31st Millennium from Ultramarines gene-seed. The Mortifactors recruit from the austere Feral World of Posul, where the sun never rises on its frigid plains and its population of nomadic tribes are constantly in conflict with one another and practice cannibalism. The Mortifactors' Neophytes are chosen from the most vicious and skilled warriors on the planet -- who subsequently have a very morbid and dark outlook on life.

N

Name Origin Founding Notes
The Nameless Unknown Unknown The Nameless is a Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is known about this Chapter in current Imperial records.
Necropolis Hawks Raven Guard Ultima Founding The Necropolis Hawks is a Loyalist Space MarineChapter comprised entirely of Primaris Space Marines, created from the rare lineage of the Raven Guard and raised during the Ultima Founding of 999.M41. Trained extensively in close-quarters warfare and veterans of a dozen close-fought cityfights, the Necropolis Hawks are stoic and efficient in their warfare. They bear their battlefield role insignia upon their backpacks so that their comrades can identify them even in the choking smoke and dust of urban war.
Nemesis Ultramarines Second Founding The Nemesis Chapter is a Loyalist Codex Astartes-compliant Space Marine Chapter. It is a Second Founding Successor Chapter of the Ultramarines Legion. There is little information on this little-known Chapter in current Imperial records, except that it is descended from those Ultramarines companies which fought alongside the then-Loyalist Night Lords Legion during a brutal purgation campaign against Abhuman corsairs during the Great Crusade. Afterwards its members bore black gauntlets, midnight blue helms and the ancient weighing scales and death's head icon of judgment in heraldic opposition of their Legion numeral, and took the name of "Nemesis" as their own. During the Second Founding, the existing "Nemesis" companies formed the core group of Astartes for the newly formed Nemesis Chapter.
Nemesors Unknown Ultima Founding The Nemesors is a Loyalist Space Marine Chapter comprised entirely of Primaris Space Marines, created from an unknown lineage and raised during the Ultima Founding of ca. 999.M41. They are the key components of the resurrected Primarch's Indomitus Crusade to reclaim the galaxy. The Nemesors played a role in the Indomitus Crusade under Lord Commander of the Imperium Guilliman's orders and were seen in action upon the world of Agrathane Excellia by the twisted Heretic Astartes and former Emperor's Children Apothecary Fabius Bile. Bile was so impressed with the Primaris Astartes' performance in combat that he soon began planning to capture several and begin his own experiments upon them to create new versions infused with the essence of Chaos.
Night Hawks Unknown Unknown The Night Hawks is a Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is known about this Chapter in current Imperial records, other than its participation in the Angarius Incursion in the late 41st Millennium.
Night Swords Imperial Fists Unknown The Night Swords is a Codex Astartes-compliant Loyalist Space Marine Chapter of unknown Founding created in the 32nd Millennium from the stoic lineage of the Imperial Fists. This Chapter hails from the barren of Lavantia located in the Segmentum Tempestus. Lavantia is a world whose population lives in teeming hive cities, surrounded by vast deserts. The Night Swords maintain a fortress-monastery far out in the arid desert wastes, away from the civilian population. Perhaps the most notable event for this Chapter in recent centuries has been its recovery of the remains of multiple ancient Land Raiders Proteus, which were used to construct the first of these ancient vehicles since the time of the Great Crusade.
Night Watch Unknown Unknown The Night Watch is one of the Loyalist Space Marine Chapters founded as part of the Astartes Praeses -- one of the 20 Chapters of Astartes mentioned in the ancient tome known as the Mythos Angelica Mortis that was created to defend the regions surrounding the Eye of Terror in the Segmentum Obscurus from the Forces of Chaos. The Night Watch of an unknown Founding and origin.
Nova Legion Ultramarines Unknown The Nova Legion was a Loyalist Space Marine Chapter of unknown Founding and a Successor Chapter of the Ultramarines. Its Chapter planet was the world of Scintil-Novax. The Nova Legion had been tasked alongside its fellow Ultramarines Successor Chapters the Crimson Consuls, Vindicators, and the Marines Mordant with guarding the rimward frontiers of the Maelstrom Zone.
Nova Wings Unknown Unknown The Nova Wings is a Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is known about the Nova Wings Chapter in current Imperial records.
Novamarines Ultramarines Second Founding The Novamarines is a Second Founding Successor Chapter of the Ultramarines. The Novamarines are scattered throughout the galaxy, and have not fought together as a Chapter since the early years of the 37th Millennium.

O

Name Origin Founding Notes
Oblators Unknown Unknown The Oblators is a Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is known about this Chapter in current Imperial records.
Obsidian Glaives Ultramarines Second Founding The Obsidian Glaives was a Second Founding Successor or Primogenitor Chapter of the Ultramarines. The Obsidian Glaives were recorded as having been annihilated when their home world of Obstiria was invaded in 998.M41 by the vast greenskin hordes of the infamous Ork Warlord Grukk Face-rippa and his Red WAAAGH!. Their current status is unknown.
Omega Marines Unknown Unknown The Omega Marines is a Loyalist Space Marine Chapter of unknown origin or Founding raised sometime during the 40th Millennium. Nothing else is currently known about this Chapter in current Imperial records.

P

Name Origin Founding Notes
Pain Bringers Unknown Unknown The Pain Bringers is a Loyalist Space Marine Chapter of unknown Founding and origin. Its most notable action occurred in 846.M38, on the third moon of Vida's World, where it engaged and defeated an Eldar army, and as a result, recovered a nearly-intact Fire Prism Grav Tank. Almost nothing else is known about this Chapter in current Imperial records.
Panthers Unknown Unknown The Panthers is a Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is known about this Chapter in current Imperial records.
Patriarchs of Ulixis Ultramarines Second Founding The Patriarchs of Ulixis is a Loyalist Codex Astartes-compliant Space Marine Chapter. It is a Second Founding Successor Chapter of the Ultramarines. Proud Primogenitors, the Patriarchs of Ulixis have won great acclaim for their skill in battle. They are renowned for their exceptional bladework and marksmanship, to the point where their Veterans are often seconded to the Honour Guards of other Ultramarines successors.
Penitents Unknown Unknown The Penitents is a Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is known about this Chapter in current Imperial records.
Persecutors of Darkness Dark Angels Unknown The Persecutors of Darkness is a Successor Chapter of the original Dark Angels Space Marine Legion. Almost nothing is known about the Persecutors of Darkness in Imperial records save that they exist and that they too are numbered amongst the ranks of the Unforgiven.
Praetors of Orpheus Ultramarines Second Founding The Praetors of Orpheus is a Codex Astartes-compliant Second Founding Successor Chapter of the Ultramarines. Nothing else is known about this Chapter in current Imperial records.
Praetors of Ultramar Ultramarines Ultima Founding The Praetors of Ultramar is a Loyalist Space Marine Chapter comprised entirely of Primaris Space Marines, created from the lineage of the Ultramarines and raised during the Ultima Founding of 999.M41. The Praetors of Ultramar is one of the ten Astartes Chapters permanently assigned by Lord Commander of the Imperium Roboute Guilliman with defending the Realm of Ultramar in the wake of the Plague Wars. It was created after the end of the Indomitus Crusade in the early 42nd Millennium and its numbers were originally drawn from the remaining Unnumbered Sons of Ultramarines descent. These were the nine Legion-sized forces which comprised half of the Primaris Space Marines created during the Ultima Founding who were not placed within the normal Adeptus Astartes Chapter structure. Their Chapter homeworld was named Howsbridge.
Prophets of Mercury Unknown Unknown The Prophets of Mercury was once a Loyalist Chapter of Space Marines of unknown origin and Founding. It was lost after entering the Eye of Terror in 321.M37 as part of the Imperial Abyssal Crusade. It is unknown what it endured during its sojourn into the Eye, though it was declared Martyr Extremis by the Imperial Inquisition, considered to have been wiped out by the Forces of Chaos.
Purgators Unknown Unknown The Purgators is a Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is known about this Chapter in current Imperial records.
Purple Stars Unknown Unknown The Purple Stars is a Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is known about this Chapter in current Imperial records. It is rumoured to have close ties with the Adeptus Mechanicus and the Inquisition.

Q

No known Chapters' names begin with the letter "Q".

R

Name Origin Founding Notes
Rainbow Warriors Unknown Unknown The Rainbow Warriors is a Loyalist Space Marine Chapter of unknown origin and Founding of which there is almost no further mention in current Imperial records. The Chapter's homeworld is called Prism. It should also be noted that in official Imperial records of Space Marine Chapter Homeworlds there is a map showing the locations of different Space Marine Chapters. There is one planet on this map where in the place of a Chapter name, it says "record deleted". By looking closely, it is clear that this deleted Chapter's badge is that of the Rainbow Warriors.
Rampagers White Scars Second Founding The Rampagers is a Loyalist Space Marine Chapter and a Second Founding Successor Chapter of the White Scars. Like their progenitors, the Rampagers make use of ritual facial scarring to denote both the rank and achievements of Astartes in the Chapter. These scars are applied during a long, sacred Chapter ceremony called the Blooding. The blood drawn from the faces of the Space Marines during this ritual is then mixed with the drinks served during the feast that always follows the completion of the ceremony.
Raptors Raven Guard Second Founding The Raptors is a Loyalist Second Founding Successor Space Marine Chapter of the Raven Guard. It has been heavily involved in many of the most recent campaigns of the Imperium of Man, including the Badab War, the Third War for Armageddon and the Taros Campaign. The Raptors was originally and mistakenly recorded in Imperial records as a Chapter called the Raptor Legion with a very different colour scheme; this mistake has now been rectified. As a Chapter, the Raptors have been nearly rendered extinct multiple times, but have learned to adapt to changing circumstances so well that they have flourished where other Chapters would simply have had their names added to the ranks of the fallen. The Raptors' Chapter culture is one that is very wary of the idea of martial glory or honour, and prefers instead to emphasise pragmatism, adaptability and completion of the mission over all other concerns. The Raptors, having been reduced to so few Battle-Brothers so often in their history, have no illusions about what war truly is. They understand that war is suffering and death. It is a brutal business that they specialise in, but they have no desire to wallow in its misery beyond what is required to carry out the Emperor's will.
Raven Guard N/A First Founding The Raven Guard is one of the original First Founding Space Marine Legions and was originally the XIX Space Marine Legion before the Second Founding and the adoption of the Codex Astartes. The Primarch of the Raven Guard was Corvus Corax. The Raven Guard's homeworld is Deliverance, the airless mining moon of the Forge World Kiavahr, though its original name, before the Horus Heresy, was Lycaeum. The Raven Guard's fortress-monastery on Deliverance is known as the Ravenspire. The Raven Guard is known for its cool-headed, even intellectual temperament, its superb infiltration skills and skill at furious close-quarters engagements. The Raven Guard Space Marines are the masters of unseen and guerilla warfare, only engaging in frontal assaults when no other option presents itself. The Raven Guard is also rightly feared for the potent units of Assault Marines they field, who use a pair of Lightning Claws instead of the usual Bolt Pistol and Chainsword.
Raven's Watch Unknown Unknown The Raven's Watch is a little known Loyalist Space Marine Chapter of unknown Founding or origin. Very little is recorded in official Imperial records, with the exception of its most recent defence of the beleaguered world of Kitab in 990.M41, which came under attack by Tyranids, a splinter of Hive Fleet Eumenides.
Reclaimers Unknown Unknown The Reclaimers is one of the Loyalist Space Marine Chapters founded as part of the Astartes Praeses -- one of the 20 Chapters of Astartes mentioned in the ancient tome known as the Mythos Angelica Mortis that was created to defend the regions surrounding the Eye of Terror in the Segmentum Obscurus from the Forces of Chaos. The Reclaimers is a Chapter of unknown Founding and origin. The level of technology and weaponry used by the Reclaimers Chapter appears to be higher than the Imperial average, even among the usually well-equipped Astartes, leading many outsiders to suspect that its Armoury is particularly extensive and diverse. Its Power Armour is noted to be highly decorative and finely-crafted.
Red Consuls Ultramarines Unknown The Red Consuls is a little known Loyalist Space Marine Chapter descended from the lineage of the Ultramarines. This Chapter's most notable actions occurred in 926.M41, when it was a part of an Astartes task force, that defended the Vidar Sector from the Necron weapon known as the World Engine, a planet-sized spacecraft, armed with Gauss Projectors capable of scorching entire planets of all life. Twelve times, the Imperial task force attempted to overwhelm the unstoppable engine of destruction. But only through the heroic, but ultimately, suicidal actions of a fellow Space Marine Chapter, was the World Engine brought low.
Red Dragons Unknown Unknown The Red Dragons is a Loyalist Codex Astartes-compliant Chapter of unknown Founding and origin. Almost nothing else is known about this Chapter in current Imperial records.
Red Hunters Unknown Unknown The Red Hunters is a Loyalist Space Marine Chapter of unknown origin and Founding that has unusually strong ties to the Inquisition. The Red Hunters Chapter has a long history of putting itself at the service of the Inquisition and the entire Chapter has been known to serve under the command of an Inquisitor Lord on certain occasions, most notably during the lamentable campaigns known as the Months of Shame and the Siege of Vraks.
Red Knights Blood Angels Unknown The Red Knights is a young Loyalist Space Marine Successor Chapter of the Blood Angels, created during an unknown Founding. Almost nothing is known about this Chapter in Imperial records, except that it has clashed with a Night Lords warband in the orbit above the planet of Quelos. Created as they were from the Blood Angels' gene-seed, the Red Knights too, carry the genetic flaws inherited from Sanguinius. Like many of their contemporary Successor Chapters founded in later centuries, the Red Knights were greatly affected by the Black Rage. Similar to the Flesh Eaters, they too, are a shrinking Chapter as the flaw begins to whittle down their numbers.
Red Legion Unknown Unknown The Red Legion is a Loyalist Codex Astartes-compliant Space Marine Chapter of unknown origin and Founding. This Chapter hails from the world of Oxatan. Nothing else is known about this Chapter in current Imperial records.
Red Scimitars Unknown Unknown The Red Scimitars is a Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is known about this Chapter in current Imperial records except for the location of its homeworld within the Pandraxx Sub-Sector of the Acteron Sector of the Segmentum Ultima.
Red Scorpions Unknown Unknown The Red Scorpions is a Loyalist Space Marine Chapter known to be composed of conservative Imperial purists who are famed for their complete and utter devotion to Imperial doctrine, past the point where pragmatism or even reason would seem to require otherwise. The Chapter is most renowned among other Astartes for its absolute adherence to every line of the Codex Astartes, which is unheard of in any other Chapter -- including the Ultramarines. It is considered perhaps the most intensely loyal and puritanical of all the Space Marine Chapters and will not serve beside any xenos or mutants, including even Imperially-sanctioned Abhumans like Squats and Ogryns. However, it has a high-regard for psykers and makes extensive use of Space Marine Librarians. Equally unique in nature is the frequency with which the Red Scorpions' Apothecaries are present in the Chapter's Tactical Squads as squad leaders in place of a Sergeant.
Red Seraphs Unknown Unknown The Red Seraphs is a Codex Astartes-compliant Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is known about this Chapter in current Imperial records.
Red Talons Iron Hands Second Founding The Red Talons is a Loyalist Space Marine Chapter and a Second Founding Successor Chapter of the Iron Hands. The Red Talons were founded in the wake of the tragic events that occurred during the lamentable Horus Heresy, having suffered the tragedy of the loss of their Primarch Ferrus Manus during the open days of the rebellion at the Drop Site Massacre on the world of Istvaan V at the hands of his one-time friend and brother, Fulgrim, Primarch of the traitorous Emperor's Children Legion. The Red Talons were founded from a portion of the Iron Hands Legion's Morragul Clan, made up primarily of outcasts and the most unstable elements of the X Legion, who fought and died under the merciless command of their bloody-handed Clan commander, the Iron-Lord Autek Mor. The Red Talons' fortress-monastery is located on their homeworld of Raikan.
Red Templars Imperial Fists Unknown The Red Templars is a Loyalist, Codex Astartes-compliant Space Marine Chapter of an unknown Founding date which is a Successor Chapter of the Imperial Fists. The Red Templars have been known to make use of Assault Bikes at the squad level in combat. Little else is currently known about this Chapter in Imperial records.
Red Wings Blood Angels Unknown The Red Wings is a Loyalist Space Marine Successor Chapter of the Blood Angels, created during an unknown Founding. Almost nothing is known about this Chapter in Imperial records. Created as they were from the Blood Angels' gene-seed, the Red Wings too, carry the genetic flaws inherited from the Primarch Sanguinius. Like many of their contemporary Successor Chapters founded in later centuries, the Red Wings were greatly affected by the genetic flaws of their Blood Angels' heritage known as the Black Rage and the Red Thirst.
Red Wolves Unknown Unknown The Red Wolves is a Loyalist Chapter of Space Marines of unknown origin and Founding. Very little is known about the Chapter in Imperial records. The Red Wolves claim the planet of Bloodfall in the Segmentum Solar as their Chapter homeworld.
Redeemed Unknown Unknown The Redeemed is a Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is known about this Chapter in current Imperial records.
Redeemers Unknown Unknown The Redeemers is a Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is known about this Chapter in current Imperial records.
Reparators Unknown Unknown The Reparators is a Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is known about this Chapter in current Imperial records.
Retractors Unknown Unknown The Retractors is a Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is known about this Chapter in current Imperial records.
Revilers Raven Guard Unknown The Revilers is a Loyalist Space Marine Chapter of unknown Founding created from the gene-stock of the Raven Guard. This Chapter is known to specialise in jungle warfare. Almost nothing else is known about this Chapter in current Imperial records.
Rhetors Unknown Unknown The Rhetors is a Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is known about this Chapter in current Imperial records.
Rift Stalkers Raven Guard Ultima Founding The Rift Stalkers is a Loyalist Space Marine Chapter comprised entirely of Primaris Space Marines, created from the rare lineage of the Raven Guard and raised during the Ultima Founding of 999.M41. These gene-crafted warriors are the key components of the resurrected Primarch's Indomitus Crusade to reclaim the galaxy for Mankind.

S

Name Origin Founding Notes
Sable Brotherhood Blood Angels Unknown The Sable Brotherhood is a Loyalist Space Marine Chapter and a Successor Chapter of the Blood Angels, created during an unknown Founding. The Battle-Brothers of the Sable Brotherhood are considered to be unusually dour, even for Successors of the Blood Angels.
Sable Swords Unknown Unknown The Sable Swords is a Loyalist Codex Astartes-compliant Space Marine Chapter of unknown origin and Founding said to be created in the latter years of the 41st Millennium, making it one of the newest Space Marine Chapters to be raised, though there is some conflicting evidence on this in the Imperial records, with some reference to the Chapter existing as early as the 32nd Millennium. This discrepancy has not yet been reconciled. The Sable Swords Chapter was created following the valiant sacrifice of the entirety of the Astral Knights Chapter to stop the threat of a massive Necron World Engine on the outskirts of the Danorra System in 926.M41. In the wake of the World Engine's destruction, the Astral Knights were struck from the roster of active Space Marine Chapters. The Sable Swords Chapter was formed to fill the void and took up stewardship of the Astral Knights' all-but abandoned fortress-monastery located on the world of Obsidia in the Ultima Segmentum.
Salamanders Unknown First Founding The Salamanders is a First Founding Space Marine Chapter whose Primarch was Vulkan. It originally served as the Imperium's XVIII Space Marine Legion during the Great Crusade and the Horus Heresy. Its homeworld is the volcanic Death World of Nocturne. The Salamanders as a Chapter are unusually concerned with preventing civilian casualties compared to most other Space Marines and believe that one of their most important duties is to protect the lives of the Emperor of Mankind's innocent subjects whenever and wherever possible. An unusual trait of the Salamanders is that their Battle-Brothers tend to be slower in reflex reaction than those of other Chapters. Their gene-seed also causes a peculiar reaction in these Astartes' Melanochrome organ, resulting in an individual Battle-Brother's skin becoming obsidian-black and their eyes blazing with a burning red glow granting them infrared vision.
Sanguine Host Blood Angels Unknown The Sanguine Host is a Loyalist Space Marine Chapter and a Successor Chapter of the Blood Angels, created during an unknown Founding.
Scar Lords Unknown Unknown The Scar Lords is a Loyalist Space Marine Chapter of unknown Founding and origin. This Chapter's only notable action was during the Damocles Crusade in 745.M41, when it took part in the invasion of the Tau Sept world of Dal'yth. Almost nothing else is known about this Chapter in the Imperial records.
Scions of Iron Unknown Unknown The Scions of Iron is a Codex Astartes-divergent Loyalist Space Marine Chapter of unknown Founding and origin. They are known for their high reverence for the Machine Spirit of their vehicles and equipment.
Scions of Sanguinius Blood Angels Unknown The Scions of Sanguinius are a Loyalist Space Marine Successor Chapter of the Blood Angels, created during an unknown Founding.
Scythes of the Emperor Ultramarines 3rd Founding The Scythes of the Emperor is a fierce and proud Chapter created from the lineage of Roboute Guilliman. Its origins can be traced back to the bygone era of the Horus Heresy, when it was originally part of the Ultramarines Legion's 199th "Aegida" Company, which was assigned as sentinel over the restricted world of Sotha, and the mysterious xenos artefact known as the Pharos. Following the Second Founding in 021.M31, Guilliman charged the remaining members of "Aegida" Company with the continued watch over the secrets of the Pharos as an 11th ghost company, in direct contradiction of the dictates of the Codex Astartes. Later, during the 3rd Founding in 001.M32, Captain Oberdeii, the last surviving member of "Aegida" Company, was reassigned as the first Chapter Master of a newly created Chapter, which he renamed the "Scythes of the Emperor". The Scythes continued their vigil over Sotha and the surrounding sectors in the Ultima Segmentum for the next nine millennia. Recently, they faced near annihilation at the hands of the Tyranids of Hive Fleet Kraken in 992.M41. Though severely depleted, the surviving Battle-Brothers of the Scythes have vowed to wipe out the remnants of the Tyranids in the Ultima Segmentum, even while they continue with their efforts to rebuild the Chapter.
Shadow Falcons Unknown Unknown The Shadow Falcons is a Loyalist Space Marine Chapter of unknown Founding and origin. This Chapter is notable for possessing a high number of Librarians within its ranks. At least one junior Lexicanium serves in each Company's Command Squad. Almost nothing else is known about this Chapter in the Imperial records.
Shadow Haunters Unknown Unknown The Shadow Haunters is a Loyalist Space MarineChapter of unknown Founding and origin. Almost nothing is known about this Chapter in the Imperial records, except that it has participated in the pacification of the Fenris System that was caughty in a daemonic incursion.
Shadow Hawks Unknown Unknown The Shadow Hawks is a Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is known about this Chapter in Imperial records save that its 3rd Company went Renegade following the Cruach Mhorn Massacres of 304.M39 and its Captain Mahaur became the Chaos Lord known as Mahaur the Harvester who later led the Slaughterkin warband of Chaos Space Marines.
Shadow Wolves Imperial Fists Unknown The Shadow Wolves was a Codex Astartes-compliant, Loyalist Space Marine Chapter derived from the Imperial Fists' gene-seed. Created during an unknown Founding, the Shadow Wolves was known to be a zealous and faithful Chapter by reputation, fighting for the honour of the Emperor of Mankind for thousands of Terran years, until it met its ultimate fate at the hands of a Tyranid splinter fleet in 987.M41 when its homeworld of Varadon was overrun by the xenos swarms.
Shadowhawks Unknown Unknown The Shadowhawks is a Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is known about this Chapter in the Imperial records, except that it has participated in the First and the Second Punisher Wars against the vile Punishers Chaos Space Marine warband.
Silver Drakes Unknown Unknown The Silver Drakes is a Loyalist Space Marine Chapter comprised entirely of Primaris Space Marines, created from an unknown lineage and raised during the Ultima Founding of ca. 999.M41. The Silver Drakes were tasked by the Imperium with turning back Hive Fleet Ouroboris. Their Inceptor Squads cut a swathe through the Hive Fleet's sky-swarms, hunting the immense winged monsters at their heart. Though the Drakes' tactics are effective, their numbers are still few. Isolated and outnumbered, the Chapter has dug in to fight a long, bloody, running war.
Silver Eagles Ultramarines Second Founding The Silver Eagles is a Loyalist Codex Astartes-compliant Space Marine Chapter. It is a Second Founding Successor Chapter of the Ultramarines Legion. Little is known of this Chapter's history within Imperial archives.
Silver Guard Unknown Unknown The Silver Guard is a Loyalist Space Marine Chapter of unknown Founding and origin that fought to liberate the Sabbat Worlds Sector from the control of the Forces of Chaos during the Sabbat Worlds Crusade that began in 741.M41. Nothing else is known about this Chapter within current Imperial records.
Silver Sabres Unknown Unknown The Silver Sabres is a Codex Astartes-compliant Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is known about this Chapter in current Imperial records.
Silver Skulls Ultramarines (Unconfirmed) Second Founding The Silver Skulls is a Codex Astartes-compliant Loyalist Chapter of Space Marines which is a possible Second Founding Successor Chapter of the Ultramarines, though this remains unconfirmed. The Silver Skulls have earned a reputation for achieving victory for the Imperium of Man no matter the odds stacked against them. Of course, this reputation has been earned because the Silver Skulls will only take to the battlefield when the psychic portents that their specialist Librarians known as Prognosticators receive from the Emperor indicate that the outcome of the combat will be favourable for the Chapter. The Silver Skulls' homeworld is the Feral World of Varsavia, which lies on the edge of the region of the galaxy known as the Gildar Rift in the Ultima Segmentum, a thinly settled area haunted by numerous xenos species. The Silver Skulls are known to engage in a number of barbaric rites that are likely to have emanated from the cultures from which they recruit. Notable amongst these is the practise of head taking, whereby especially potent enemies are beheaded during battle, their decapitated heads born as trophies until victory is won. As part of its post-battle celebrations, the Chapter selects the heads of the most powerful enemies, flense flesh from bone and layer the skulls in a coat of silver.
Silver Stars Unknown Unknown The Silver Stars was once a Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is known about this Chapter in current Imperial records except for the dire fate that it succumbed to. Unable to recover enough of the precious Progenoid Glands of their fallen Battle-Brothers, the Silver Stars could not cultivate further Astartes organ implants to create future generations of Space Marines for the Chapter. The Chapter quickly died off, unable to replace its losses. Like their counterparts, the Sons of Gorgax, this Chapter is now no more than a dusty memory, the only evidence of its existence being a dry footnote within the Index Astartes.
Silver Templars Unknown Unknown The Silver Templars is a Loyalist Codex Astartes-compliant Space Marine Chapter of an unknown Founding and uncertain origin, though it does possess Primaris Space Marines within its ranks. The Silver Templars' homeworld is Novaris, located in the Ultima Segmentum.
Skull Bearers Executioners (Unconfirmed) Unknown The Skull Bearers is a Loyalist Codex Astartes-compliant Space Marines Chapter of unknown origin and Founding which believes itself to be a Successor Chapter of the zealous and ferocious Executioners Chapter. The validity of this belief is unknown. Very little else is known about this Chapter in current Imperial records.
Sky Sentinels Unknown Unknown The Sky Sentinels is a Loyalist Codex Astartes-compliant Space Marine Chapter of unknown origin and Founding. This Chapter hails from the world of Pranagar. Nothing else is known about this Chapter in current Imperial records.
Solar Hawks White Scars Unknown The Solar Hawks is a little-known Loyalist Space Marine Successor Chapter of the White Scars, founded during an unknown Founding. Sharing their forefather's battle lust and aggressive style of lightning warfare, the Solar Hawks are notable for being aggressive and noble. This Chapter embodies all that is best in the sons of the Khan. The Solar Hawks field an especially large number of airborne assets, regularly deploying whole wings of Stormtalons or Stormravens into battle. Almost nothing is known about this Chapter in Imperial records.
Sons of Antaeus Unknown 21st Founding The Sons of Antaeus is a Loyalist Space Marine Chapter created during the 21st Founding, known as the "Cursed Founding", and Imperial records concerning the activities of the Sons of Antaeus are few. Like the Antaeus of Greek myth, the Astartes of the Sons of Antaeus are unusually large and robust physical specimens, even among their kind, and they are capable of surviving wounds and physical injuries that would kill even other Space Marines. The obvious links between the Chapter's name and the ancient Terran Herculean mythology could hint at a link between the Sons of Antaeus and the Ultramarines Chapter, but there is no official evidence to back this assumption. There are many rumours as to why they are so difficult to destroy, ranging from reinforced skeletons to enhanced genetics. At this time, the truth remains unknown.
Sons of Dorn Imperial Fists Unknown The Sons of Dorn is a Loyalist Codex Astartes-compliant Space Marine Chapter and a Successor Chapter of the Imperial Fists. It was created during an unknown Founding at some time during the 34th Millennium. The Sons of Dorn's Chapter homeworld is the Feudal World of Archea which is located in the Segmentum Solar. In 999.M41 Archea was ravaged by a splinter fleet of the Tyranids' Hive Fleet Leviathan. With the bulk of the Chapter deployed in defence of the Imperium around the Eye of Terror to halt the 13th Black Crusade, much of Archea was consumed by the Great Devourer. With a world and a Chapter to rebuild, it will likely take several standard centuries before the Sons of Dorn are back to full strength.
Sons of Gorgax Unknown Unknown The Sons of Gorgax were once a Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is known about this Chapter in current Imperial records except for the dire fate that it succumbed to. Unable to recover the precious Progenoid Glands of their fallen Battle-Brothers in large enough amounts, the Sons of Gorgax were unable to cultivate further organ implants for future generations of new Space Marines for the Chapter. The Chapter quickly died off, unable to replace its losses. This Chapter is now no more than a dusty memory, the only evidence of its existence an ancient record within the Index Astartes.
Sons of Guilliman Ultramarines Unknown The Sons of Guilliman is a Codex Astartes-compliant Space Marine Chapter created during the 33rd Millennium from Ultramarines gene-seed. Nothing else is known about this Chapter in current Imperial records.
Sons of Jaghatai White Scars Unknown The Sons of Jaghatai is a Codex Astartes-compliant Loyalist Space Marine Chapter of unknown Founding. It is a Successor Chapter of the White Scars. Almost nothing is known about this Chapter in current Imperial records.
Sons of Medusa Iron Hands N/A - Ratified by Imperial edict (37th Millennium) The Sons of Medusa is a Loyalist Successor Chapter of Space Marines drawn from the unforgiving Iron Hands Chapter whose existence was ratified by an Imperial edict of the High Lords of Terra in 011.M37. The Sons of Medusa is a Chapter with a history of ruthless efficiency in the merciless persecution of the Imperium of Man's foes. Like their forebears, the Sons of Medusa are extreme devotees of the Emperor of Mankind and look with disgust upon those who lack their strength of will. They are a distinguished Chapter whose long roll of battle honours can be traced back to the early 37th Millennium.
Sons of Orar Ultramarines Unknown The Sons of Orar is a Codex Astartes-compliant Loyalist Space Marine Chapter of Ultramarines lineage, created during an unknown Founding. Its homeworld is named Armato and it lies in the Segmentum Ultima. This Chapter reveres Orar, an Ultramarines Legion Captain who won great renown in the wake of the Horus Heresy. The Sons of Orar are perhaps most famous for spearheading the Imperium of Man's massive assault upon the Eldar Craftworld Alaitoc.
Sons of Orpheus Unknown Unknown The Sons of Orpehus is a Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is known about this Chapter in the Imperial records.
Sons of the Phoenix Imperial Fists Ultima Founding The Sons of the Phoenix is a Loyalist Space Marine Chapter comprised entirely of Primaris Space Marines created from the lineage of the Imperial Fists and raised during the Ultima Founding of 999.M41. Faithful to the Emperor and ritualistic in their battle cant, the Sons of the Phoenix pride themselves on plunging into the flames of battle. They are constantly on crusades, which are led by their Chaplains. Their crusades are so impressive in spectacle they pave the way for the Imperial Creed to spread across the galaxy, and hence are followed by a great many holy men and women.
Sons of Sanguinius Blood Angels Second Founding The Sons of Sanguinius is a Loyalist Space Marine Chapter and a Successor Chapter of the original Blood Angels Legion that was created during the Second Founding, which occurred during the early 31st Millennium following the dark years of the Great Scouring. A dark and brooding Chapter, the Sons of Sanguinius continually grieve for their lost Primarch Sanguinius who was slain at the hands of the treacherous Warmaster Horus at the end of the Horus Heresy. Brutal and bloodthirsty, they zealously prosecute the enemies of Mankind, often times displaying a disturbing and callous disregard for the lives of the civilians of the Imperium. Their attitude is, as long as their mission objectives are obtained, the means justify the ends. What separates the Sons of Sanguinius from many of their brother Chapters is their willingness to engage in rituals that involve the consumption of blood. Like their fellow Chapter, the Blood Drinkers, these blood rituals and ceremonies are the cause of their resistance to the twin curses of the Red Thirst and the Black Rage. Certainly, they experience a smaller proportion of their Battle-Brothers succumbing to the Black Rage.
Sons of the Kraken Unknown Unknown The Sons of the Kraken is a Codex Astartes-compliant Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is known about this Chapter in current Imperial records.
Sons of the Raven Raven Guard (Unconfirmed) Unknown The Sons of the Raven was a Codex Astartes-compliant Loyalist Space Marine Chapter of unknown Founding and origin. Based on its name, it is highly suspected of being a rare Successor Chapter of the venerable First Founding Raven Guard Legion. Almost nothing is known about this Chapter in the Imperial records other than its participation in the campaign against the Forces of Chaos and the Hell-Forge of Sarum, where the Sons of the Raven were utterly annihilated in 416.M37.
Space Sharks Unknown Second Founding (unconfirmed) or 23rd Founding (37th Millennium) (Unconfirmed) The Space Sharks is a Loyalist Chapter of Space Marines whose origin remains unknown and may be of the Second Founding. The Space Sharks are the current guardians of the Endymion Cluster of worlds in the Maelstrom Zone of the Segmentum Ultima. The Endymion Cluster is the region once governed by the Mantis Warriors Chapter which the Space Sharks were granted following the Badab War as compensation for their losses. Before that conflict, the Space Sharks were a fleet-based Chapter. It is not entirely clear whether the Space Sharks are a separate Chapter or are the same group of Astartes as the recently returned Carcharodons Chapter that also took part in the Badab War.
Space Wolves N/A First Founding The Space Wolves is one of the original 20 First Founding Space Marine Legions, and was once led by its famed Primarch, Leman Russ. The Space Wolves are renowned for their anti-authoritarian ways and their embrace of their homeworld Fenris' savage barbarian culture as well as their extreme deviation from the Codex Astartes in the Chapter's organisation.
Star Dragons Unknown Unknown The Star Dragons is a Loyalist Codex Astartes-compliant Space Marine Chapter of unknown Founding and origin. The Chapter homeworld of the Star Dragons is the planet Draconith. Currently, the Star Dragons have joined with the Blood Swords Chapter to travel the wastes of space near the Eye of Terror in a joint containment fleet designated Containment Fleet Kappa. For centuries these two Chapters had frequently joined forces when a given situation demanded it. The close proximity of their homeworlds of Jaggafall and Draconith had given them great reason to remain cordial and closely allied. Sometime in its recent history the Blood Swords Chapter was torn from its homeworld. This act of shame resulted in the Chapter undertaking a Penitent Crusade in order to redeem itself in the eyes of the Emperor of Mankind. In the wake of this act of shame, the Star Dragons moved to support their long time allies.
Star Leopards Unknown Unknown The Star Leopards is a Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is known about this Chapter in current Imperial records.
Star Phantoms Unknown 23rd Founding The Star Phantoms is a Loyalist Space Marine Chapter of the 23rd Founding, the so-called "Sentinel" Founding, created in the early 38th Millennium from an unknown origin. During this tumultuous period of history, the Star Phantoms was one of several Chapters whose mission was to take and hold various xenos-contested regions on the very borders of the Emperor's domains. It took part in the final days of the Badab War and the final assault upon the Renegade Astral Claws' Chapter homeworld of Badab Primaris, helping bring the war to a successful conclusion. The Star Phantoms display a peculiarly idiosyncratic Chapter Cult. The Chapter's rites and traditions focus on death and martyrdom, the fallen being revered over and above the living, symbols of death and mourning are used as Chapter iconography, the Chapter symbol itself featuring a sand-timer surmounted by two death's heads. This trait extends to a generalised disregard for the living that has often manifested in excessive collateral damage amongst populations the Chapter has been tasked with purging of insurrectionist elements, and even amongst allied units.
Star Scorpions Unknown 25th Founding The Star Scorpions was a Loyalist Space Marine Chapter of the 25th Founding of unknown origin. It is now considered extinct, a lost Chapter of Astartes. It is unknown what Chapter provided the gene-seed for the Star Scorpions' Founding and little else about the Chapter is available in current Imperial records.
Steel Confessors Iron Hands 19th Founding The Steel Confessors is a Loyalist Space Marine Chapter secretly founded in the 36th Millennium during the 19th Founding by the Adeptus Mechanicus for its own use from the gene-seed of the Iron Hands. After their discovery by the Inquisition, the Steel Confessors were forced to become an independent Chapter, but they still maintain unusually close ties with the Mechanicum of Mars. They recently successfully defended their homeworld, the Forge World of Kalevala, from an attack by the Tyranid Hive Fleet Leviathan, though at great cost to the Chapter.
Stone Hearts Unknown Unknown The Stone Hearts is a Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is known about this Chapter in Imperial records. Stone Hearts Battle-Brothers are known for marking their bodies with intricate tattoos that denote each battle that they have fought in.
Stone Gauntlets Unknown Unknown The Stone Gauntlets is a Loyalist Space Marine Chapter of unknown Founding and origin. This Chapter's most notable action occurred during the Imperium's defence of the Medina Corridor from a large invasion by the Forces of Chaos. Almost nothing else is known about this Chapter in the Imperial records.
Storm Callers Unknown Unknown The Storm Callers is a Loyalist Space Marine Chapter of unknown origin and Founding. Nothing else is currently known about it in Imperial records other than that portions of the Chapter were corrupted by Chaos during the Storm Callers advance into the Taninim Expanse, a civil war was fought within the ranks of the Chapter and the Loyalists emerged triumphant, purging the Traitors from their midst.
Storm Falcons Unknown Unknown The Storm Falcons ís a Loyalist Codex Astartes-compliant Space Marine Chapter of unknown origin and Founding. Virtually nothing is known about this obscure Chapter within the official Imperial archives, except the name of the Chapter' homeworld of Talon located in the Segmentum Ultima in the Hodur Sector. In 997.M41, Hive Fleet Leviathan encroached into Imperial space. The Tyranids, under the direction of the legendary synapse creature known as the Swarmlord, orchestrated multiple planetary invasions. In the span of only four months, the Swarmlord oversaw the absorption of 24 worlds, including the Storm Falcons' Chapter homeworld of Talon. This resulted in a series of swift victories for the Leviathan along the spine of worlds within the Hodur Sector. Talon was subsequently abandoned. Whether or not the Storm Falcons fought to the last or simply abandoned their doomed planet is not known. The Chapter's current fate remains unknown.
Storm Giants Salamanders (Unconfirmed) 26th Founding The Storm Giants is a Loyalist Codex Astartes-compliant Chapter of Space Marines created during the 26th Founding in 738.M41. Its origins remain unknown, though many suspect that it is a Successor Chapter of the Salamanders of Nocturne. The Storm Giants is primarily a fleet-based Chapter, preferring to meet any threats to the Imperium of Mankind on its own terms. It also does not want to be tied down to any one world, having to defend a fortress-monastery in case it is ever attacked, as has happened to too many other Space Marine Chapters. As a fleet-based Chapter, the Storm Giants can stay mobile while avoiding those that would bring ill fortune upon the Chapter.
Storm Hawks Raven Guard Unknown The Storm Hawks is a Loyalist Codex Astartes-compliant Space Marine Chapter and rare Successor Chapter of the Raven Guard. Their exact founding date is unknown but the Storm Hawks are thought to be related to the Raven Guard through a later Founding. Nothing else is known about this Chapter in current Imperial records.
Storm Lords White Scars Second Founding The Storm Lords is a Loyalist Space Marine Chapter and a very rare Second Founding Successor Chapter created from the gene-seed of the White Scars. Nothing else is known about this Chapter in current Imperial records.
Storm Ravens Unknown Unknown The Storm Ravens is a Loyalist Space Marine Chapter of unknown Founding and origin. This Chapter was instrumental in the development of the Suppression Force doctrine, which is credited to Jagveij Skyhammer, Master of the Arsenal for the Storm Ravens Chapter and victor of the Rhopara Crusade. It was at his direction that several of the Storm Ravens' Land Speeders were stripped of all unnecessary armament and fitted with sophisticated terrain-following sensor arrays. Drawing upon two-hundred years of combat experience, Skyhammer retrained the Chapter's pilots, suppressing their hunting urges and awakening instincts of evasion and caution, the better to scout enemy formations and direct Whirlwind fire support. After great successes in the assault on the Rhoparra sector capital, Skyhammer's tactic was adopted not only by the rest of the Storm Ravens Chapter, but across the Adeptus Astartes as a whole. Almost nothing else is known about this Chapter in the Imperial records.
Storm Reapers White Scars Ultima Founding The Storm Reapers is a Loyalist Space Marine Chapter comprised entirely of Primaris Space Marines, created from the lineage of the White Scars and raised during the Ultima Founding of 999.M41.
Storm Wardens Unknown Unknown The Storm Wardens is a Codex Astartes-compliant Space Marine Chapter of unknown Founding and origin, based on the Forbidden World of Sacris in the Calixis Sector of the Segmentum Obscurus. Its entire 1st Company and Chapter Master Owin Glandwyr were placed into stasis within a sealed portion of the Chapter's fortress-monastery on Sacris following the Nemesis Incident of 945.M36. Furthermore, the Chapter homeworld of Sacris was forbidden to have any contact with the rest of the Imperium by the Inquisition. The reason for these steps remain unknown.
Storm Warriors Unknown Unknown The Storm Warriors is a Loyalist Codex Astartes-compliant Space Marine Chapter of unknown origin and Founding. It appears that it is a late Founding Chapter. However, beyond this, almost nothing is known about the Storm Warriors in current Imperial records.
Storm Wings Unknown Unknown The Storm Wings is a Loyalist Codex Astartes-compliant Space Marine Chapter of unknown origin and Founding. The Storm Wings' Chapter homeworld is Eyrie, a planet in the Segmentum Solar. Nothing else is known about them in current Imperial records.
Stormwalkers Unknown Unknown The Stormwalkers is a Codex Astartes-compliant Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is known about this Chapter in current Imperial records. The Stormwalkers are known to have sent three Brotherhoods of Astartes to take part in the massive Dark Marches Crusade (launched in 610.M36), commanded by Lord Tempestus Hal Orpheus.
Subjugators Imperial Fists (Unconfirmed) Unknown The Subjugators is a Loyalist Space Marine Chapter suspected to be a Successor Chapter of the Imperial Fists' created during either the 23rd or 24th Founding in the 41st Millennium. The Subjugators is one of the Loyalist Space Marine Chapters founded as part of the Astartes Praeses -- one of the 20 Chapters of Astartes mentioned in the ancient tome known as the Mythos Angelica Mortis that was created to defend the regions surrounding the Eye of Terror in the Segmentum Obscurus from the Forces of Chaos. The Chapter's homeworld is called Xenax, which lies in the Segmentum Solar.
Supplicators Unknown Unknown The Supplicators is a Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is known about this Chapter in current Imperial records.
Swords of Praesium Unknown Unknown The Swords of Praesium is a Loyalist Codex Astartes-compliant Space Marine Chapter of unknown Founding or origin. Little is known of this Chapter's history within the Imperial archives, save from the fact that two of this Chapter's companies turned Renegade on the world of Acropolis Vega after being trapped by a Warp Storm for 70 years. They became the Renegade Warband known as the Swords of Khargoth.
Swords of the Emperor Unknown Unknown The Swords of the Emperor is a Loyalist Codex Astartes-compliant Space Marine Chapter of unknown Founding or origin. Little is known of this Chapter's history within current Imperial archives.

T

Name Origin Founding Notes
Tarantulas Unknown Unknown The Tarantulas is a Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is known about this Chapter in current Imperial records.
Taurans Unknown Unknown The Taurans is a Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is known about this Chapter in current Imperial records.
Tempest Guard Unknown Unknown The Tempest Guard is a Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is known about this Chapter in current Imperial records.
Tempestors Unknown Unknown The Tempestors is a Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is known about this Chapter in current Imperial records.
Templars of Blood Blood Angels Unknown The Templars of Blood is a Loyalist Space Marine Chapter and a Successor to the Blood Angels of an unknown Founding. Like their progenitors, these sons of the Primarch Sanguinius take pride in their ability to meet the foe head-on, although this is where the similarities between the Chapters end. The Astartes of the Templars of Blood are known to suffer from the flaw of Sanguinius known as the Black Rage at a much reduced rate compared to the Blood Angels or their other Successor Chapters. The reason for this is unknown, though some suspect the Chapter has bought this boon through dark and secretive means.
Terror Tigers Unknown Unknown The Terror Tigers is a Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is known about this Chapter in current Imperial records. Sometime in the 41st Millennium, the Terror Tigers lost one quarter of the Chapter's strength when a mutant warlord assaulted their homeworld, after which their Chapter Master summarily ordered his own execution as punishment.
Tiger Claws Astral Claws 21st Founding The Tiger Claws was a former Loyalist Space Marine Chapter descended from the Astral Claws Chapter. Declared destroyed over fourteen centuries earlier and effectively a dead Chapter, a lone Strike Cruiser reappeared after having been trapped in the Warp and subjected to severe time distortion. Its world having been rendered lifeless and the Chapter an all forgotten legend, the acting Chapter Master travelled to Holy Terra in an attempt to petition for the release of his Chapter's Gene-Seed in an effort to rebuild the lost Chapter. But subsequently the Tiger Claws envoy disappeared without trace while awaiting to petition their position and was summarily dismissed. It was later found in 908.M41 during the conflict known as the Badab War that the Astral Claws Chapter Master Lufgt Huron had in fact deliberately withheld his Chapter's gene-seed, not to replenish the Chapter's own losses, but at first in order to help save their near extinct kin, the Tiger Claws Chapter. The last remnants of which had sought sanctuary with them in secret. When the Astral Claws were defeated, 200 of their wretched kind managed to escape, fleeing into the Warp Storm known as the Maelstrom. It is possible that some of the Astral Claws brethren were in fact Tiger Claws, and now survive among the renegade warband known as the Red Corsairs.
Tigers Argent Unknown Unknown The Tigers Argent is a Loyalist Chapter of Codex Astartes-compliant Space Marines of unknown Founding and origin. It aided the Imperial Angevin Crusade that conquered the Calixis Sector of the Segmentum Obscurus for the Imperium of Man in the early 39th Millennium. There is little else currently known about it in Imperial records other than that its homeworld is known as Icefang.
Tormentors Unknown Unknown The Tormentors is a Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is known about this Chapter in current Imperial records.
Tormented Unknown Unknown The Tormented is a Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is known about this Chapter in current Imperial records.
Tributors Unknown Unknown The Tributors is a Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is known about this Chapter in current Imperial records.

U

Name Origin Founding Notes
Ultramarines N/A First Founding The Ultramarines, the direct descendant of the XIII Space Marine Legion of the First Founding, is considered the greatest of all the Space Marine Chapters in the Imperium of Man, almost single-handedly holding the Imperium together after the Horus Heresy. The Ultramarines are currently led by their recently resurrected Primarch Roboute Guilliman, who leads the defence of the Realm of Ultramar from the forces of Nurgle during the so-called Plague Wars. Their home world is Macragge in the autonomous Imperial Realm of Ultramar. The Ultramarines have more Successor Chapters descended from their gene-seed than any other First Founding Legion.
Umbral Knights Unknown Ultima Founding The Umbral Knights is a Loyalist Space Marine Chapter comprised entirely of Primaris Space Marines, created from an unknown lineage and raised during the Ultima Founding of 999.M41. They are the key components of the resurrected Primarch's Indomitus Crusade to reclaim the galaxy for Mankind. The Umbral Knights played a role in the Indomitus Crusade under Lord Commander of the Imperium Guilliman's orders until they were tasked with staying behind after one of the initial conflicts was won so that they could consolidate the Crusade's gains among the liberated worlds.

V

Name Origin Founding Notes
Valedictors Unknown Unknown The Valedictors is a Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is known about this Chapter in the Imperial records. The Valedictors was originally portrayed as a First Founding Legion which saw action on the Eastern Fringe of the Imperium against Orks, Eldar, and Traitors during the Horus Heresy. It was described in detail in two Epic articles in White Dwarf 126 and 136, (circa 1990-91). The status of the Valedictors changed in White Dwarf 235, where they are said to be of a "later Founding", (post-Second Founding). Therefore, the Valedictors are no longer considered a First Founding Legion.
Venerators of Osiron Unknown Unknown The Venerators of Osiron is a Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is known about this Chapter in the Imperial records.
Venerators Unknown Unknown The Venerators was a Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is known about this Chapter in Imperial records. During the 5th Black Crusade in 723.M36, Abaddon the Despoiler scoured the Elysia Sector, raiding hundreds of Imperial worlds and causing untold death and destruction. On Tarinth, the Despoiler lured the Warhawks and Venerators Chapters into the ruins of Kasyr Lutein where he trapped them between the daemonic hordes of Khorne and the forces of the Black Legion. In a bitter last stand, both Loyalist Chapters were utterly destroyed, their skulls taken by the ancient Daemon Prince Doombreed, whose existence preceded that of the Imperium itself, to be mounted upon the mighty Skull Throne of the Blood God.
Victors Unknown Unknown The Victors is a Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is known about this Chapter in current Imperial records.
Vindicators Ultramarines Unknown The Vindicators is a Loyalist Space Marine Chapter of unknown Founding and a Successor Chapter of the Ultramarines. Almost nothing is known about this Chapter in current Imperial records.
Viper Legion Unknown Unknown The Viper Legion is a Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is known about this Chapter in current Imperial records.
Void Tridents Ultramarines Ultima Founding The Void Tridents is a Loyalist Space MarineChapter comprised entirely of Primaris Space Marines created from the lineage of the Ultramarines and raised during the Ultima Founding of 999.M41. Recruited from the Ocean World of Talassar in the Realm of Ultramar, the Void Tridents follow the naval traditions of the Ultramaran empire. They are experts in starship boarding actions and ship-to-ship warfare, though under the command of Lord Commodore Theodro Vethrus, they have also proven themselves to be expert at planetary assaults.
Vorpal Swords Unknown Unknown The Vorpal Sword is a Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is known about this Chapter in Imperial records other than its participation in the Abyssal Crusade and Gheistos Cataclysm.

W

Name Origin Founding Notes
War Bearers Unknown Unknown The War Bearers is a Loyalist Codex Astartes-compliant Space Marine Chapter of unknown Founding and origin. Nothing else is known about them in current Imperial records.
Warhawks Unknown Unknown The Warhawks was a Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is known about this Chapter in Imperial records. During the 5th Black Crusade in 723.M36, Abaddon the Despoiler scoured the Elysia Sector, raiding hundreds of Imperial worlds and causing untold death and destruction. On Tarinth, the Despoiler lured the Warhawks and Venerators Chapters into the ruins of Kasyr Lutein where he trapped them between the daemonic hordes of Khorne and the forces of the Black Legion. In a bitter last stand, both Loyalist Chapters were utterly destroyed, their skulls taken by the ancient Daemon Prince Doombreed, whose existence preceded that of the Imperium itself, to be mounted upon the mighty Skull Throne of the Blood God.
Warmongers Unknown Unknown The Warmongers is a Loyalist Codex Astartes-compliant Space Marine Chapter of unknown origin and Founding. Little else is recorded about it within current Imperial records.
Warrior Adepts Unknown Unknown The Warrior Adepts is a Loyalist Codex Astartes-compliant Space Marine Chapter of unknown origin and Founding. Nothing else is known about it in current Imperial records.
Warriors Tempest Unknown Unknown The Warriors Tempest is a Loyalist Codex Astartes-compliant Space Marine Chapter of unknown origin and Founding. Nothing else is known about it in current Imperial records.
Watchguards Unknown Unknown The Watchguards is a Loyalist Chapter of Space Marines of unknown Founding and origin which fought to defend the Fortress World of Cadia during the climax of the 13th Black Crusade in 999.M41. Little else is currently known about it in Imperial records.
White Consuls Ultramarines Second Founding The White Consuls is a Second Founding Chapter of Space Marines. It is listed in the Apocrypha of Davio as having derived from the Ultramarines' gene-seed. Unlike other Astartes Chapters, it is unusual in that it maintains two Chapter Masters simultaneously -- one leading the Chapter to war as battlemaster, the other as the Proconsul of Sabbatine and its vassal star system, overseeing the defence of the Chapter's homworld and commanding a standing force ready at a moment's notice to respond to incursions through the Cadian Gate.
White Minotaurs Unknown Unknown The White Minotaurs is a Loyalist Codex Astartes-compliant Space Marine Chapter of unknown origin and Founding. Nothing else is known about it in current Imperial records.
White Panthers Ultramarines (suspected) 26th Founding The White Panthers is a Codex Astartes-compliant Space Marine Chapter founded in 738.M41 during the 26th Founding. It is a Chapter of unknown origin, but is highly suspected to descend from Ultramarines' gene-seed due to its predilection for being strict adherents of the Codex Astartes.
White Scars N/A First Founding The White Scars is a Loyalist Space Marine Chapter, founded from the genetic template of its Primarch Jaghatai Khan. It was also one of the First Founding Legions of the Legiones Astartes, in this case the V Legion. Known and feared throughout the Imperium of Man for their highly mobile way of war, the White Scars are considered the masters of the lightning strike and hit-and-run attack and are particularly adapted to the use of the Astartes Assault Bike as their mechanical steeds and their forces contain an unusually large number of Bike Squads compared to other Chapters. Bearing the ritual scars of bravery, these fierce warriors fight with all the tribal savagery that defines the fierce steppe nomads of their homeworld Mundus Planus, bringing swift death to all of the enemies of the Imperium.
White Templars Imperial Fists Unknown The White Templars is a Loyalist Codex Astartes-compliant Space Marine Chapter of Imperial Fists lineage, created during an Founding. The White Templars' Chapter homeworld is the planet named Sanctum, located in the Segmentum Solar. Virtually nothing else is known about the Chapter in Imperial records.
Widowmakers Unknown Unknown The Widowmakers is a Loyalist Space Marine Chapter of unknown Founding and origin. Almost nothing is known about this Chapter in current Imperial records.
Wolfspear Space Wolves Ultima Founding The Wolfspear is a Loyalist Space Marine Chapter comprised entirely of Primaris Space Marines, created from the lineage of the Space Wolves and raised during the Ultima Founding of 999.M41. The Wolfspear was created after the end of the Indomitus Crusade by Lord Commander of the Imperium Roboute Guilliman from the ranks of his Unnumbered Sons and was tasked with guarding the Pit of Raukos to prevent any further use of that Warp rift by the Forces of Chaos to assault the nearby Imperial worlds. The Astartes of the Wolfpsear were not happy with being placed permanently on garrison duty, hoping to remain on the frontlines of battle, as befit true sons of Leman Russ. The Astartes of the Wolfspear suffer from a deep burden -- though they know their progenitors, the Space Wolves, have accepted Primaris Space Marines like them into the ranks of their Chapter, there are still many within the Space Wolves who have not yet decided whether to accept Primaris Astartes as true inheritors of the legacy of the Wolf King. Their Chapter homeworld is located at 108/Beta-Kalapus-9.2 in Wilderness Space.

X

No known Chapters' names begin with the letter "X".

Y

Name Origin Founding Notes
Yellow Jackets Unknown Unknown Founding

(Second Founding -Presumed)

The Yellow Jackets is a Loyalist Space Marine Chapter of an unknown Founding and uncertain origin. Virtually nothing else is known about this Chapter in current Imperial records.

Z

No known Chapters' names begin with the letter "Z".

Sources

This is only a select and generalised list of sources. Please see each individual Chapter's page for a complete and accurate listing.

  • Codex Adeptus Astartes - Blood Angels (8th Edition), pg. 18-19, 23
  • Codex Adeptus Astartes - Dark Angels (8th Edition), pp. 18-19, 23
  • Codex Adeptus Astartes - Space Marines (8th Edition), pp. 20-21, 30, 53, 59
  • Chapter Approved: The Second Book of the Astronomican
  • Chapter Approved: The Cursed Founding
  • Citadel Journal 45, pg. 22
  • Codex Adeptus Astartes - Blood Angels (8th Edition), pg. 42
  • Codex: Orks (8th Editon), pg. 69
  • Codex Adeptus Astartes - Blood Angels (7th Edition) (Digital Edition)
  • Codex: Blood Angels (6th Edition)
  • Codex: Blood Angels (5th Edition)
  • Codex: Chaos Daemons (6th Edition), pg. 23
  • Codex Heretic Astartes - Chaos Space Marines (8th Edition), pg. 48, "The Primogenitor Primaris"
  • Codex Heretic Astartes - Death Guard (8th Edition), pg. 23
  • Codex: Chaos Space Marines (6th Edition), pp. 22-25
  • Codex: Chaos Space Marines (4th Edition), pp. 2, 21, 69
  • Codex: Chaos Space Marines (3rd Edition, 2nd Codex)
  • Codex: Dark Angels (6th Edition)
  • Codex: Dark Angels (4th Edition)
  • Codex: Dark Angels (3rd Edition), pg. 14
  • Codex: Eye of Terror (3rd Edition), pg. 16
  • Codex: Imperialis
  • Codex: Khorne Daemonkin (7th Edition), pg. 30
  • Codex: Legion of the Damned (6th Edition), pg. 14
  • Codex: Space Marines (7th Edition)
  • Codex: Space Marines (6th Edition), pg. 78
  • Codex: Space Marines (5th Edition), pg. 30
  • Codex: Space Marines 4th Edition, pp. 18, 20
  • Codex: Space Marines (3rd Edition), pg. 47
  • Codex: Space Wolves (7th Edition)
  • Codex: Space Wolves (5th Edition)
  • Codex: Tyranids (8th Edition), pg. 39
  • Codex: Ultramarines (2nd Edition)
  • Warhammer 40,000: Conquest 1, "A Thousand Chapters," "An Empire Torn in Two"
  • Citadel Journal 20, "Creating a Space Marine Chapter - The Sons of Sanguinius", by Isaac Tobin, pp. 19-20
  • Dark Imperium (Novel) by Guy Haley, Chs. 15, 20
  • Dataslate: Officio Assassinorum, pg. 14
  • Deathwatch Core Rulebook (RPG)
  • Deathwatch: First Founding (RPG)
  • Deathwatch: Honour the Chapter (RPG)
  • Deathwatch: Rites of Battle (RPG)
  • Wrath & Glory: Core Rules (RPG), pg. 202
  • Devastation of Baal (Novel) by Guy Haley
  • Horus Heresy: Collected Visions
  • How to Paint Space Marines (2004)
  • Imperial Armour Volume Four - The Anphelion Project, Second Edition, pg. 117
  • Imperial Armour Volume Nine - The Badab War - Book One
  • Imperial Armour Volume Ten - The Badab War - Book Two
  • Imperial Armour Volume Twelve - The Fall of Orpheus
  • Imperial Armour Volume Thirteen - War Machines of the Lost and the Damned, pg. 23
  • Index Astartes I
  • Index Astartes II
  • Index Astartes III
  • Index Astartes IV
  • Index Astartes, "The Emperor's Shield - Space Marine Chapters of the Armageddon War"
  • Insignium Astartes: The Uniforms and Regalia of the Space Marines
  • Realms of Chaos: The Lost & The Damned
  • Realms of Chaos: Slaves to Darkness
  • The Horus Heresy - Book One: Betrayal (Forge World Series) by Alan Bligh
  • The Horus Heresy - Book Two: Massacre (Forge World Series) by Alan Bligh
  • The Horus Heresy - Book Three: Extermination (Forge World Series) by Alan Bligh
  • The Horus Heresy - Book Four: Conquest (Forge World Series) by Alan Bligh
  • The Horus Heresy - Book Five: Tempest (Forge World Series) by Alan Bligh
  • The Horus Heresy - Book Six: Retribution (Forge World Series) by Alan Bligh
  • Warhammer 40K Compendium (1st Edition), pg. 105
  • Warhammer 40,000 Rulebook (6th Edition), pg. 177
  • Warhammer 40,000 Rulebook (8th Edition), pg. 161
  • Warlords of the Dark Millennium: Huron Blackheart (6th Edition), pg. 6
  • Wrath & Glory: Core Rules (RPG), pg. 202
  • White Dwarf 98 (1988), "Chapter Approved: The Origin of the Legiones Astartes"
  • White Dwarf (October 2017), "Eavy Metal - Create your own Chapter," pp. 117-119
  • The Beast Arises (Novel Series):
    • The Emperor Expects (Novel) by Gav Thorpe
    • Predator, Prey (Novel) by Rob Sanders
  • Blood of Asaheim (Novel) by Chris Wraight, pp. 57, 96, 227, 236, 487
  • Sons of the Hydra (Novel) by Rob Sanders
  • Onyx (Story) by Chris Wraight
  • Truth Is My Weapon (Short Story) by Justin D Hill
  • The Devastation of Baal (Novel) by Guy Haley, Ch. 10
  • Tau & Necron (Collector's Guide), pg. 45
  • Soulbound (Audio Drama) by George Mann