The Rot Cannon is a large weapon similar in size to a Battle Cannon used by Imperial main battle tanks. The Rot Cannon is carried into battle by Plague Hulk Daemon Engines used by the Forces of Chaos. The Plague Hulk is a Daemon Engine of Nurgle, the Chaos God of pestilence and disease. The weapon is an arcane device of unknown, although possibly daemonic, origin and is fused to the end of the creature's right arm. The Rot Cannon belches out shells that are so impregnated with dark ichor and infection that a mere scratch from the weapon's bone fragments will immediately and agonisingly fester into a crippling injury.
- Imperial Armour Apocalypse II, pg. 72
- Imperial Armour Modelling Masterclass II, pp. 78-79
- Plague Hulk - Forge World