Count D'if was the leader of the Cybock Imperium.
After defeating the Hyperions, Rassilon and the Alliance of Races embarked on another campaign against threats to universal harmony. One such enemy was Count D'if of the Cybock Imperium. Rassilon challenged D'if to a game of Rassilon's roulette using a time gun. D'if lost and he was wiped from existence. (COMIC: Gangland)