178cm, 67kg A sharp, handsome young man with pale pink hair tied in a loose ponytail and reddish-purple eyes. Because his name is long, he is sometimes called by the nickname "Azz." While attending the prestigious demon school Babyls, he caused trouble on the day of the entrance ceremony and was assigned to the Misfit Class. He primarily uses fire magic, which he has polished himself. Despite this specialization, his magical talent is so exceptional that he is considered quite powerful for his age. Furthermore, he possesses excellent grades, talent, an aristocratic upbringing, and a demeanor that values etiquette. His reputation precedes him not only in Babyls but throughout the Netherworld, giving him a dignified and proud appearance. During his Evil Cycle, as a demon of the Asmodeus family—which governs virtue and destruction—he goes on a beautiful rampage. He is prickly toward students other than Iruma.

158cm, 56kg The only human in the Netherworld. Alice and Clara do not know that Iruma is human. He has a modest appearance with spiky, short blue hair and blue eyes lighter than his hair color, characterized by a large cowlick on top of his head. He is so kind-hearted that he can be a bit of a pushover. Having lived his life forced to accept requests since childhood, he cannot say no to anyone who asks him for a favor. He loves eating very much. He has the ability to evade all incoming attacks.

153cm, 50kg The only girl in the trio. A cheerful, beautiful girl with waist-length lime-green hair and green eyes. She has a hime-cut, sharp shark-like teeth, and is ambidextrous. Her personality is that of a natural airhead, to the point where one might wonder if she has ADHD or is just an eccentric. Since her personality is the polar opposite of Asmodeus Alice, who values rules and etiquette, the two are always bickering behind the scenes over Iruma.