Denki is somewhat flirtatious towards the girls of his class (and even the ones from other classes), trying to pass himself off as a smooth talker. He is not very lucky with his approaches though, frequently getting ignored or outright rejected by everyone. He is also slightly mischievous, joining in pranks occasionally. Overall, it appears that Denki has an interest in looking cool in front of others, but has a shallow understanding of how to do it.

Denki is not very academically bright, requiring help when it comes to studying. He does not appear to show much interest in classes and tends to become nervous in regards to tests. Despite this, he can show surprising knowledge about certain areas such as literature. His overall lack of wit often makes him a common victim of snark, in particular from Kyoka Jiro.

During combat situations, he is very quick to panic, leading him to activate his Quirk in anticipation. He also becomes more reluctant to use his full power when there are allies close to him, being afraid of hurting them through collateral damage. When he is assured that all his allies will be safe from his powers, he becomes more confident in his fighting abilities. He also does not tolerate others looking down on him or his classmates.