He was once a captain in the ill-fated Bloodhawks chapter, a forgotten successor to the Blood Angels. They were famed for their daring maneuvers, taking on enemy forces far larger than their own, winning the day against incredible odds, their glorious deeds spreading throughout the Imperium. They were exemplars to be followed. They were heroes to be sung about.
That all ended when this famous captain succumbed to the black rage, becoming a raving madman hell bent on destruction and mayhem during the middle of a crucial battle. Unable to command, the battle went poorly, which cost the Bloodhawks a great number of their warriors. Unable to have this defeat mar their perfect record, the Bloodhawks Chapter Master, better known as the Griffin, was driven into deep depression and hate for his battle-brothers. All of his dreams of even further glory were out of reach, as a long period of time would be spent rebuilding their tattered chapter.
The chapter became thrown into further chaos. The Griffin stole a chaotic artifact that was kept in the depths of their fortress monastery, calling upon the powers of the Dark Gods to give what the chapter had stolen from him. The remaining battle-brothers became sacrifices to Chaos.
In a moment of clarity, the Black Swordsman saw what he had done. With his sanity regained, he challenged the Griffin and fought ferociously for his chapter, but it wasn’t enough. The chaotic gifts and hordes of demons at his command was far too much for the former captain. Betrayed and beaten, he was left to die inside the last remaining ship of the Bloodhawks.
Rumors of his survival haunt the battlefield, a wandering warrior hunted by daemons, consumed by seeking the death of his former commander and friend.