When Accazzar-Beta refused to pay fealty to Horus, the Warmaster led an attack on the world that served as a sacrifice to summon Doombreed. In the early 31st Millennium, the Daemon Prince fought at the side of the Warmaster Horus during the Horus Heresy. He has served his master well over the millennia, and has returned time and time again to plague humanity and all those that would stand against the will of the Blood God.
He carried out a campaign of such wanton slaughter and sheer genocide across the breadth of Mankind's homeworld in that forgotten time that Khorne, then still a relatively young Chaos God, found him to be worthy of the ultimate reward of daemonhood as one of the first of the Blood God's Daemon Princes.
Centuries before the Age of the Imperium began, Doombreed had been a human warlord on Old Earth some time in the 1st or 2nd Millennium.
His True Name has long been forgotten, but he was once a mortal human. Doombreed was one of the first human beings ever raised to daemonhood by the will of Khorne.
