Zenitsu is a paranoid, anxious coward. He is quite greedy but usually he's too busy cowering to show it. He is a demon slayer who uses thunder breathing, but has only mastered the first form. He almost never fights, but when he falls asleep, he sleep-walks/fights, and becomes an unconscious powerhouse. He wears a demon slayer uniform with a yellow haori with white triangles, and has yellow and orange, layered hair. He is also desperate to get a wife, not wanting to die alone.