Doombreed is a mighty Daemon Prince of Khorne, responsible for leading the Black Crusade that bears his name against the Imperium. He is older and more powerful than even the mighty Daemon Primarchs.
Doombreed was one of the first of Khorne's servants. His true name has long been forgotten, but he was once human, a mighty warlord who led armies which ravaged entire nations on Terra long ago, responsible for genocide and murder on a grand scale. Such wanton carnage drew the eye of the god Khorne, still relatively young, who granted the warlord the ultimate reward of Daemonhood.