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 golden eyes and notably small eyebrows. He's slimmer than most, with little visible muscle mass. He is a friendly, social, and energetic boy who enjoys hanging out with others. He is rather casual when interacting with other people. He may come off as blunt and reckless at times