Denki Kaminari (上かみ鳴なり電でん気き Kaminari Denki?), also known as Stun Gun Hero: Chargebolt (スタンガンヒーロー・チャージズマ Sutan Gan Hīrō Chājizuma?), is a student in Class 1-A at U.A. High School, training to become a Pro Hero.
Denki has short gold hair, parted to the right with a black lightning-shaped streak on the left of his side fringe, which is angled to partially obscure his left eye. He has slanted, somewhat triangular golden eyes and notably small eyebrows. He's slimmer than most male students.