Theomastix is, for the most part, emotionless, so much so that his lack of reaction to most situations is often misinterpreted as comedic relief. He is very much a sociopath, as he is dangerously deceptive and is a skilled manipulator who feels no connection with anyone. As well as a firm believer in nihilism, Theomastix finds interest in everyday life by aspiring to be the "ultimate being," the strongest and smartest living thing in existence. He does this by stealing valuables, information and history out of planets and destroying them afterwards to increase his own value. He is a self-absorbed untrustworthy bastard with no sense of fear or morality and he that doesn't care who he hurts in his quest for power, not feeling any sense of guilt after all the members of Imperium die, some of