Katsuki is also immensely prideful, as he hates the idea of others helping him and having to rely on others to assist him in battle. Because of his pride, Katsuki refuses to work together with others, claiming he can do whatever he's assigned on his own. His pride has cost him on numerous occasions: he lost the Battle Trial due to his lack of cooperation with Tenya and he was effortlessly defeated by All Might at the First Term Final Exam and failed the Hero License Exam because of his aggressive behavior. His pride is so intense that when pitted together with Izuku against All Might, he outright refused his partner's help, saying that he'd rather lose, but when the situation became critical, Katsuki was able to (reluctantly) put his pride aside temporarily so that he could cooperate with Izuku. Whenever his pride is damaged, Katsuki has a habit of crying as seen after his loss at the hands of Izuku and being forced to work alongside him. Katsuki is not against repaying those who help him, such as when he gave Eijiro the money for his broken night vision goggles when he came to his rescue. Still, due to his childhood experiences, Katsuki has difficulty doing the same thing towards Izuku.

Nickname : Kachhan (Deku calls him that) , King Explosion Murder , Angry Boi