The Annihilators were once a Loyalist Space Marine Chapter of unknown origin and Founding. After the unremitting violence of the xenocidal Quietus Campaign in 836.M36, the Annihilators Chapter finally succumbed to blood psychosis. Those of the Chapter still able to act rationally gathered at their fortress-monastery in the hope of finding absolution. Instead of redeeming their sins, however, their corrupted Chaplains led them in an ancient ritual, leaving their souls wide open to daemonic influence. Every member of the Chapter was possessed over the course of a single moonlit night, shifting form and devolving into armoured half-daemon monstrosities. This tragic event came to be known as The Great Degeneration. Calling themselves the Beasts of Annihilation, the brethren went to war again, though this time it was the Imperium of Man that felt their wrath.
The Annihilators' Chapter colours are not listed in current Imperial records.
The Annihilators' Chapter badge is not listed in current Imperial records.
- Codex: Chaos Space Marines (6th Edition), pg. 23