Abaddon stands without equal among the servants of Chaos, a warrior whose ambition is matched only by his hatred of the Emperor and all His works. In the days of the Great Crusade he was first captain of the Sons of Horus and the closest of the Warmaster's confidants, a killer of such renown that he was counted among the deadliest warriors ever to bear power armour.
When Horus fell and the traitor cause collapsed, the survivors of his Legion sank into despair and infighting. It was Abaddon who dragged them from that abyss. Rejecting the failed legacy of his master, he forged the Black Legion from the wreckage, cladding its warriors in black and binding to himself renegades and traitors of every stripe. He would not be the pawn of any single Chaos God, and so he pledged himself to Chaos Undivided, and the four powers looked upon him with rare and unified favour.
For ten thousand years Abaddon has prosecuted the Long War with relentless purpose, launching Black Crusade after Black Crusade from the Eye of Terror against the fortress worlds of the Cadian Gate. To the Imperium these assaults seemed like failures, blunted campaigns that ended in retreat. In truth each was a step toward a greater design, a gathering of relics, alliances and dark power for the blow that mattered.
That blow fell in his final and greatest crusade, when he shattered the defences of Cadia and destroyed the world itself, tearing open the galaxy-spanning warp-rift now called the Great Rift. With that single catastrophic act he undid millennia of Imperial security and flung wide the gates for the hosts of Chaos to pour forth unchecked.
He bears fearsome wargear worthy of his stature: the Talon of Horus, a relic gauntlet taken from his fallen master, and Drach'nyen, a daemon sword of terrible antiquity and appetite. Grim, patient and monstrously powerful, Abaddon the Despoiler is the living spearhead of Chaos, and he intends to end the Long War only when the Imperial Palace lies in ashes and the Corpse-God is thrown down at last.