A student of Hope's Peak Academy's Class 77-B, and a participant of the Killing School Trip. He is almost always seen with his extremely well-trained hamsters, the Four Dark Devas of Destruction: San-D (orange and white), Jum-P (grey and white), Maga-Z (tan fur with peach underbelly, chipped ear), and Cham-P (fat, orange). Gundham is an eccentric chuunibyou who claims that he has been blessed with the evil powers of the underworld, referring to everyone else as "pathetic human beings" and often rambling about the dark arts, alchemy, and astral levels. He is often lost in his own world, paying more attention to himself and his hamsters than the things going on around him. Because of this, Gundham initially comes off as self-centered and aloof, however he seems to have serious problems with socializing and physical contact. He has been strict about not wanting to touch nor be touched by others since childhood, going as far as to avoid sports and playing with other children. In his typical manner, Gundham claims that his flesh is "poisoned" to disguise his fear of intimacy. He tells Hajime that he can only be touched by very specific persons with astral levels that match his own. Though he may be awkward around other people, Gundham deeply cares about animals (despite how he refers to them as his evil minions to stay in line with his overlord persona). He claims that anything that can talk "will eventually betray you" and prefers to trust animals for their loyalty and sincere nature. He has an informational website about breeding which he maintains carefully. He also gets offended when anyone looks down on the Devas or refers to them as simply average hamsters, as he claims that hamsters are merely their "temporary form".
