INFO IS FROM THE MHA WIKI, I DIDN'T WRITE THIS MYSELF!

Denki is a friendly, social, and energetic boy who likes to hang out with people. He is rather casual when interacting with others, including the generally unfriendly Katsuki Bakugo, although he's also not above petty complaining or overreacting if feeling annoyed or shocked enough. Denki may come off as blunt and reckless at times, but is always well-meaning.

Denki is somewhat flirtatious towards the girls of his class (and even the ones from other classes), sometimes accompanying Minoru Mineta on his schemes and trying to pass himself off as a smooth talker. He is not very lucky with his approaches, though, frequently having his advances ignored or outright rejected by everyone he asks out. Denki is also a bit of a jokester and likes to tease others with playful comments.