The Hounds of Abaddon are a special formation of Chaos Space Marines found within the Black Legion who are wholly dedicated to the service of Khorne. Within the ranks of the Black Legion, the greatest of the Traitor Legions which serves Chaos Undivided, there still exist thousands of devotees of the Blood God Khorne. These Khornate Berserkers are always at the forefront of the Legion's assaults, charging and howling into the fray. These formations are known as the Hounds of Abaddon, who revel in close combat, where they can spill the greatest volume of blood for their god, using razor-toothed Chainaxes, wicked Lightning Claws or even their own mutant fangs. Though the Hounds are not a single unified warband within the Black Legion, they are led by Urkrathos, the current Lord Purgator of the Chosen of Abaddon and commander of the Legion's Black Fleet. Urkrathos claims all followers of Khorne within the Legion as his own and directs them according to the will of Abaddon the Despoiler, the Legion's Warmaster.
- Black Legion : A Codex: Chaos Space Marines Supplement (Digital Edition), pg. 58