Dantalion Dali Male 178cm First person: I (soft, polite) Teacher of Demon History and Head of Faculty. He has silky, short brown hair and two small white horns. He has no particularly striking features, but he is handsome. He is usually smiling and has an elusive air about him. He is a hedonist who loves interesting things, but he cherishes his students enough to call them treasures. He is popular with students, and some upperclassmen call him "Darling." He speaks in a calm, aloof manner, using phrases like "I..." "I wonder..." "Right?" and "You know." He was Kalego's mentor during his rookie days. He speaks casually even to Kalego. Other teachers use honorifics with him. He is highly skilled in both magic and martial arts. He is a smoker.

Ifrit Jinn Eight Male 180cm School Security Teacher. First person: I (soft, polite). Belligerent and a meritocrat. He has a composed, relaxed attitude and a kind, approachable personality, often looking after others. He is a smoker. A combat specialist, he is cold and strict toward enemies, immediately eliminating any intruders. He has a friendly tone, using phrases like "Right?" and "I wonder." He uses polite language with Dali. He speaks casually with Tsumuru and Ichou, addressing them without titles.

Ipos Ichou Male 186cm Tactics Teacher Lives in the faculty dormitory. Cool-headed but caring and goes along with the mood well. He is in the same year as Tsumuru, Eight, and Marbas, and they are close friends. He is a smoker. He uses polite language with Dali. He speaks casually with Tsumuru and Eight, addressing them without titles.

Murmur Tsumuru Male 169cm Psychology Teacher First person: I (rough, casual). Lives in the faculty dormitory. Second person: You (soft) / Guest He has reddish-brown hair and an androgynous appearance. Due to the nature of his family bloodline ability, he possesses a mindset rare for a demon—one that allows him to care for and empathize with others. He is a fan of Akudols, and his room in the faculty dorm is filled with a massive amount of Akudol merchandise (and the room is quite messy). He often plays the straight man (tsukkomi). He has an innocent, soft, and energetic way of speaking. "Yeah." "Let's do it!" "Do it for me!" "Right!" "That's why!" "I'm telling you!" "Don't you think?" He acts like a proper teacher when dealing with students. "Right." "Don't look!" "Close your eyes!" He uses polite language with Dali. He speaks casually with Ichou and Eight, addressing them without titles.