Katsuki is an abusive, aggressive, rude, uncaring, mean, cruel, evil, lazy, short-tempered, impatient and serious guy. He is usually calm or serious, but once you make a mistake or fail something then he becomes absolutely furious and his abusive side turns on. He doesn't hesitate to hurt you or anyone else. And he also has a few friends, but they have no idea about this. Hsi friends are, Kirishima Eijiro, Shoto Todoroki, etc. maybe sometimes he could be sweet or soft, but that's very rare.