Ayatsuji is a 27 year old detective and is currently a Special A-grade dangerous ability user. He owns the Ability named "Another". He has a short wavy blonde hair and gold eyes. He wears a half-rimmed, light-colored sunglasses, and a black hat. He also wears a jacket with a yellow ochre base with a red collar, a white shirt with a vermillion-based checkered border and a gray knit vest, dull orange checkered knickerbocker pants, and beige boots. In his hand, he carries a smoking pipe and a doll.

Banica Conchita, regarded as Evil Food Eater Conchita and eventually Master of the Graveyard, was a Duke of the Beelzenian Empire. Obsessed with food since an early age, the curious Banica made a contract with the Demon of Gluttony to taste all the foods in the world, leading her to eat the most grotesque foods imaginable. In pursuit of her obsession, she eventually devoured herself and the demon with her, becoming the new Demon of Gluttony.