Zhufor was not always a servant of the Dark Gods. Once, millennia ago, he was known as Balzach, a former Sergeant of the Storm Lords Chapter. During the sacking of the hive cities of Paramar, Sergeant Balzach was severely wounded and taken captive by the Traitor Marines of the World Eaters Legion. Balzach was then drugged and subjected to torture and psycho-corrective surgery to alter his brainwave patterns in order to break his Imperial indoctrination. He was turned into a raging psychopathic killer, tall and muscular beyond even his normal Space Marine physique, and reborn as Zhufor. His former life as a Loyalist Space Marine was forgotten.