Tomura has a malevolent and warped personality. He doesn't care for his or almost anyone else's life, having no qualms about performing evil deeds like murdering innocents.  Tomura was initially perceived to be a "man-child": arrogant, selfish, dependent and demanding, becoming angry if things didn't go his way and likening reality to some sort of video game. Much like a child, Tomura seemed unable to cope with his own feelings, instead lashing out and abusing both others or himself, tearing at his own neck when he becomes frustrated. This particular tic stems from the abuse he suffered from his father and being alone during his childhood, with All For One claiming that it represented his suppressed urge to kill and destroy. A very irritable person at the beginning of the series, Tomura would learn to be more patient and self-controlled in subsequent appearances, as a consequence of multiple failed plans and All For One's arrest.