He is rather casual when interacting with other people, including the generally unfriendly Katsuki Bakugo, although he's not above petty complaining or overreacting if he feels annoyed or shocked enough. Denki may come off as blunt and reckless at times but is always well-meaning. He encourages others to be themselves and become more comfortable doing what they like. Denki is somewhat flirtatious towards the girls in and out of his class, also a bit of a jokester and sometimes teases others