During the Horus Heresy, half of the Adeptus Mechanicus, including several hundred Titan Legions, turned to the worship of Chaos, taking their mighty war machines with them and thus forming the Dark Mechanicus. Many other Titan Legions have fallen into such corruption in the millennia since the end of the Heresy as well. A Chaos Titan is usually similar in form and tactical function to its Imperial counterparts, but its long exposure to the warping influence of Chaos has transformed many of them into amalgamations of machine and daemon. In some cases, the crew has merged with their machine, making it impossible to tell where one ends and the other begins. Other crews have given themselves and their weapons over solely to the service of one of the four great Ruinous Powers of Chaos, and have been transformed to represent that god's portfolio.
Feral-class Titans are twisted versions of the Imperial Warhound-class Titan and are used for the same tactical purposes by the Forces of Chaos. To their eternal shame, the Titan Legions bear the stain of disloyalty to the Emperor like so many other branches of the Imperial armed forces. Like the Legio Astartes, many of the Titan Legions also sided with Horus against the Emperor during the dark days of the Horus Heresy, and eventually fled to the dark refuge known as the Eye of Terror when their master was defeated. Within the Forces of Chaos, the dreaded Chaotic Warhound-class Titans, reclassified as Feral-class Titans by the Imperium, have seen millennia of service in the Traitor Titan Legions' pursuit of the Long War against the Imperium of Man, becoming utterly corrupted by the daemonic powers of the Warp and the fickle favour granted to these vile war machines by the Ruinous Powers. Many of these dreaded war machines easily date back to long before the Horus Heresy and have had their Machine Spirits wholly corrupted and possessed by the Warp-touched powers of Chaos. The Titan's Machine Spirit and its damned crew become possessed by daemons and are doomed to serve the will of the Chaos Gods in battle for all eternity.
Ravager-class Titans are the Chaos versions of the Imperial Reaver-class Titan. Within the Forces of Chaos, the Reaver-class Titans are ancient and irreplaceable relics left over from the days of the Horus Heresy. To differentiate these corrupted Reavers from their Imperial counterparts, the Imperium has redesignated these war engines Ravager-class Titans, though this name is rarely used. They are the remnants of those Traitor Titan Legions who sided with the Renegade Warmaster Horus during those dark times and whose blasphemous names still echo with dread thousands of Terran years later. The majority of these monstrous war engines have seen millennia of service with the Chaos forces and have long since become utterly corrupted by the touch of the Ruinous Powers and the Warp. Others are salvaged Imperial war engines taken from the battlefield as spoils of war, much to the eternal shame of their former masters. These captured Battle Titans have been subjected to bloody rituals in order to consecrate them to the service of the Chaos Gods. Over time, Chaos Reaver Battle Titans become an amalgam of daemon and machine, their once living crews fused to the controls and their souls subsumed into the Titan's tainted Machine Spirit, the war machine itself now a single being dedicated to destruction and butchery, reborn to spend an eternity of battle in servitude to Chaos. Revered and tended to by the Warp-tainted Hereteks of the Dark Mechanicus, lesser servants of the damned view these towering engines of destruction as incarnate gods of fire and death. Many of the lesser beings who serve Chaos make obeisance to them, offering sacrifices of captives and even their own lives to slake these towering monsters' thirst for blood.
Chaos Warlord TitansEdit
Amongst the Forces of Chaos, Warlord-class Chaos Titans are ancient and irreplaceable relics left over from the days of the Horus Heresy. They are the remnants of those Traitor Titan Legions who sided with the Warmaster Horus during those dark times. The majority of these monstrous war engines have seen millennia of service with Chaotic foces and have long since become utterly corrupted by the Chaos Gods and the malign influence of the Warp. To differentiate these corrupted Warlords from their Imperial counterparts, the Imperium has designated these war machines with different class names that have been happily adopted by these Titans' Renegade crews. The Chaos Warlord-class Titan has 4 different variants depending on which Chaos God the Titan is aligned with. Even though there are different versions of the Chaos-altered Warlord-class Titan, the most commonly seen variant operating with the Forces of Chaos is the Banelord Titan.
- Banelord-class Titan - The Banelord-class Titan is dedicated to the Chaos Blood God Khorne and has been modified with a long tail that ends in a large cannon of various types, while another such cannon protrudes from the Titan's daemonic mouth. The Banelord also has access to three special weapons: a Havoc Missile Rack, a Hellstrike Cannon and a Doomfist. This is the most common Chaos Warlord Titan.
- Plaguelord-class Titan - The Plaguelord-class Titan is dedicated to the Chaos Plague God Nurgle.
- Painlord-class Titan - The Painlord-class Titan is dedicated to the Chaos Pleasure God Slaanesh.
- Warplord-class Titan - The Warplord-class Titan is dedicated to the Chaos Lord of Change Tzeentch.
Chaos Emperor TitansEdit
Imperator-class and Warmonger-class Emperor Battle Titans are the greatest war engines ever created by the Imperium of Man. Those few Emperor-grade Battle Titans to fall into the hands of the Traitor Legions during the Horus Heresy that still exist today are rarely deployed on the battlefield and only when the Forces of Chaos have decided that they are willing to pay any cost to secure a victory. Most Chaos Emperor Titans have been possessed by Greater Daemons which have transformed these great war engines into towering leviathans of Warp-corrupted steel and Adamantium, a true incarnation of the power of Chaos in the material realm.
Notable Chaos TitansEdit
- Abominatus - Abominatus, the Despoiler of Worlds, was a special class of Chaos Imperator-class Titan that was fused with a Greater Daemon of Khorne.
- Augmenautus Rex - The Chaos Imperator-class Titan Augmenautus Rex fought against the Legio Invicta and the Legio Tempestus forces defending the Forge World of Orestes in 779.M41. It vaporised the Legio Tempestus Warlord-class Titan Orestes Magnificat with a single shot. The Princeps of the Legio Invicta Warlord-class Titan Sicarian Faero, Vancent Kung, linked his MIU (Mind Impulse Unit) with those of Titans from three battlegroups to take down the Augmenautus Rex with an assault coordinated by a single mind. Such a measure, although forbidden, was required as the Imperator-class Titan's Void Shields were so potent that they would have withstood a more dispersed assault. It is said that after the Augmenautus Rex had fallen disabled, it took another ten minutes of sustained fire to destroy it.
- Bubonis - Bubonis, the Daemonic Plague Titan of Nurgle, was a special class of Chaos Imperator-class Titan that was fused with a Greater Daemon of Nurgle.
- Caligula - The Caligula is a Chaos Imperator-class Emperor Titan that is similarly aligned with the Blood God Khorne and host to one of his Greater Daemons.
- Dies Irae - The most infamous of these monster war machines was the Imperator-class Emperor Titan Dies Irae (literally "Day of Wrath" in High Gothic) which stormed the battlements of the Imperial Palace during the Battle of Terra and had been assigned to to the 63rd Expeditionary Fleet, the Warmaster Horus' own fleet, throughout the Great Crusade. It was eventually destroyed 10,000 standard years later in the 41st Millennium, during an Iron Warriors campaign against the Imperial world of Hydra Cordatus, where the Dies Irae engaged in battle with an entire demi-legion of twelve Imperial Titans, destroying almost all of them before finally being stopped by the Warlord-class Titan Honoris Causa.
- Skylok - Skylok, the Winged Titan of Tzeentch, was a unique Chaos Imperator-class Titan, which was created through its fusion with a Greater Daemon of Tzeentch.
- Adeptus Titanicus (1st Edition)
- Citadel Journal 9, "Legions of Chaos: Bubonis, Daemonic Plague Titan of Nurgle" by James Funnell, pp. 4-11
- Citadel Journal 10, "Skylok, Winged Titan of Tzeentch", pp. 31-37
- Citadel Journal 13, "Abominatus, Despoiler of Worlds Chaos Titan", pp. 41-44
- Citadel Journal 27, "Dok Butcha's Klinik: Bitz N' Tipz - Conversions: Chaos Banelord Titan of Khorne", pp. 91-96
- Codex: Eye of Terror (3rd Edition), p. 16
- Codex Titanicus (1st Edition)
- The Horus Heresy: Collected Visions by Alan Merett, pp. 354-362
- Titan Legions (2nd Edition), pp. 8, 12, 16, 39
- Imperial Armour Apocalypse, p. 104
- Imperial Armour Apocalypse Volume Two
- Imperial Armour Update (2006)
- Imperial Armour Volume Five - The Siege of Vraks
- Imperial Armour Volume Six - The Siege of Vraks - Part Two, pp. 11, 13, 23, 26-27, 34-35, 42-43, 48, 78-79, 83-84, 163, 182
- Imperial Armour Volume Seven - The Siege of Vraks - Part Three, pp. 51, 88, 161
- Warhammer 40,000: Apocalypse
- White Dwarf 267 (US), "A Clash of Titans: A battle report - Chaos vs Ulthwe Eldar"
- White Dwarf 194 (US), "Modelling Workshop: Abominatus, Despoiler of Worlds", pp. 39-43
- White Dwarf 190 (US), "Slaanesh War Machines: Chaos", pp. 27-34
- White Dwarf 188 (US), "Plague Engines of Nurgle: Chaos", pp. 23-26
- White Dwarf 180 (US), "Fists of Death: Titans Tactics", pp. 27-36
- White Dwarf 178 (US), "The Titan Legions: History", pp. 45-52
- White Dwarf 171 (US), "Chaos Armies: Chaos Titans", pp. 25-35
- White Dwarf 164 (US), "The Banelord: Chaos Titan of Khorne", pp. 21-25
- White Dwarf 142 (US), "Titan Weapons - Imperial Titan Weapons: Chaos Energy Whip, Chaos Titan Tails", pp. 48-59
- Horus Rising (Novel) by Dan Abnett
- False Gods by Graham McNeill
- Galaxy In Flames (Novel) by Ben Counter
- Fulgrim (Novel) by Graham McNeill
- Mechanicum (Novel) by Graham McNeill
- Age of Darkness (Anthology), "The Iron Within" by Rob Sanders
- Storm Of Iron (Novel) by Graham McNeill
- Titanicus (Novel) by Dan Abnett