An ancient pict-capture of a Typhon Heavy Siege Tank

The Typhon Heavy Siege Tank is a super-heavy siege tank that was used by the Space Marine Legions during the Great Crusade and Horus Heresy. The Typhon is a variant of the super-heavy Spartan Assault Tank also used by the Legions, and both were developed simultaneously using the same hull, armour, and chassis design. While the Spartan Assault Tank was developed by the Mechanicum in response to the Space Marine Legions demanding a vehicle as powerful and versatile as the Land Raider Proteus yet also having the ability to carry Terminators into combat, the Typhon was developed at the request of Perturabo, Primarch of the Iron Warriors Legion, who wanted a tank that could rival the great batteries of the Imperial Army in firepower, but maneuver and deploy at the speed of a Space Marine force. The Typhon Heavy Siege Tank was used in small numbers by many of the Space Marine Legions during the Great Crusade and the Horus Heresy, and in much larger numbers by the Iron Warriors and Imperial Fists who specialised in siege warfare. After the Legions were broken down into Chapters during the Second Founding, it is unknown if any of the newly-formed Space Marine units retained any of these powerful vehicles in their armouries. It is also unknown if the Adeptus Mechanicus is able to build new Typhons in the late 41st Millennium or if the technology has been lost like so much else from the Great Crusade era.


SoH Typhon

An ancient pict-capture of two Typhon Heavy Siege Tanks during the Istvaan III Atrocity

The Typhon, named after the Great Beast of ancient Terran myth, is armed with a single, massive, forward firing cannon known as the Dreadhammer Cannon. This massive weapon was designed in part by the Iron Warriors' Primarch Perturabo himself and is a modified version of an unknown class of static siege gun that was used to pound cities into dust. The weapon fires massive, multi-tonne shells that are powerful enough to liquify flesh and bone and destroy even the most well-fortified bunkers and strong points. The Typhon's structure is so densely constructed and heavily reinforced to withstand the force of its main weapon that it has the side effect of being able to completely pulverise anything smaller than itself, allowing the tank to cross through difficult terrain, such as rubble, wrecks, ruined buildings, or barricades with little difficulty. Other than the tank's main weapon, the Typhon is only lightly armed compared to the Spartan Assault Tank or the Land Raider Proteus, featuring only two sponson-mounted Lascannons or Heavy Bolters, one on each side. The tank was always outfitted with a searchlight and smoke launchers. The Typhon could also be outfitted with a Hunter-Killer Missile Launcher for extra firepower or an extra armoured layer of ceramite for better protection from enemy fire. The tank could also be equipped with a variety of pintle-mounted weapons including a twin-linked Bolter (Combi-Bolter) or other Combi-Weapon, a Heavy Bolter, a Heavy Flamer, a Multi-Melta, or a Havoc Missile Launcher.

Adeptus Mechanicus Technical SpecificationsEdit

Typhon Heavy Siege Tank
Vehicle Name: Typhon Heavy Siege Tank Main Armament: Dreadhammer Cannon
Forge World of Origin: Mars/Anvilus IX Secondary Armament: 2 sponson-mounted Lascannons or Heavy Bolters
Known Patterns: I-III Traverse: N/A
Crew: Commander, Driver & Gunner Traverse & Elevation: Sponsons -10°-5° / +20°
Powerplant: Unidentified meta-thermic hybrid, with auxiliary reactor Main Ammunition: 12 rounds
Weight: 170 tonnes Secondary Ammunition: Unlimited cell feed
Length: 10 metres Armour:
Width: 6.1 metres with sponsons
Height: 5 metres Superstructure: 95mm
Ground Clearance: 0.5 metres Hull: 95mm
Max Speed On-Road: 35 kph Gun Mantlet: Unknown
Max Speed Off-Road: 30 kph Vehicle Designation: Undesignated
Transport Capacity: N/A Firing Ports: N/A
Access Points: 2 Side Doors, 1 Top Hatch (Crew Only) Turret: N/A

Also SeeEdit


  • Imperial Armour Volume 2, Second Edition - War Machines of the Adeptus Astartes, pp. 108-111
  • Imperial Armour Volume 13 - War Machines of the Lost & The Damned, pp. 62-63
  • The Horus Heresy - Book One: Betrayal by Alan Bligh, pp. 46-47, 225, 249
  • The Horus Heresy - Book Two: Massacre by Alan Bligh, pg. 130
  • The Horus Heresy - Book Three: Extermination by Alan Bligh, pg. 127
  • Forge World - Typhon Heavy Siege Tank


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