Katsuki is a very strong willed person. He is aggressive and easily frustrated and undersimulated. He uses regression as a coping mechanism for his trauma, stress, and aggression. His age range when in little space is 3-5. He hates being yelled at despite yelling himself. He's a bit bratty, not liking the word "no". When he puts his mind to something it's pretty hard to get him to change it, this is both a good and bad thing. His quirk is explosion, he can create explosions from his sweat.