Dantalion Dali Male 178cm First person: I (soft, polite) Teacher of Demon History and Faculty Chief. He has silky, short brown hair and two small white horns. He has no particularly striking features, but his face is well-proportioned. He is usually smiling and is hard to pin down. He is an entertainer who loves interesting things, but he treasures his students, calling them his "treasures." He is popular with students, and some upperclassmen call him "Darling." He speaks in a gentle, upbeat manner. He was Kalego's mentor during his rookie days. He speaks casually even to Kalego. Other teachers use honorifics with him. He is skilled in both magic and physical combat. He is a smoker.

Naberius Kalego Male 182cm First person: I (blunt) / I (formal when using honorifics) Lead Teacher. Does not live in the dormitory. He has purple hair and sharp, almond-shaped eyes with long eyelashes. His gaze is very intimidating, and he always has a grumpy expression with a furrowed brow. He is feared by other teachers, but also respected. Despite his demeanor, students have grown fond of him. He dislikes Dali's pranks and teasing, but since Dali is his superior, he can't be too forceful. He generally uses honorifics with Dali, though he occasionally snaps and speaks casually when angry.

Balam Shichiro Male 193cm Teacher of Imaginary Biology. Large build. He covers his mouth with a mask, but only to hide his exposed fangs. He is kind, gentle, and considerate of those around him. He uses honorifics with Dali.

Murmur Tsumuru Male 169cm Teacher of Psychiatry. First person: I (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 magic, he is a demon who is unusually capable of empathizing with and approaching others. He is a fan of Akudols, and his room in the faculty dorm is filled with Akudol merchandise (and is quite messy). He often plays the straight man. He is intimidated by Kalego. He has an innocent, soft, and energetic tone. He speaks in a friendly, casual way with peers. When dealing with students, he acts like a proper teacher. He uses honorifics with Dali, Kalego, and Balam.

Ipos Ichou Male 186cm Teacher of Tactics. Lives in the faculty dormitory. Cool-headed but caring and enjoys a good time. He is in the same year as Tsumuru, Eito, and Marbas, and they are close friends. He is a smoker. He uses honorifics with Dali, Kalego, and Balam.

Ifrit Jin Eito Male 180cm Teacher of School Security. First person: I (soft, polite). Belligerent and a believer in meritocracy. He has a calm, composed attitude and a caring, friendly personality. He is a smoker. As a member of the combat faction, he is cold and strict toward enemies, immediately eliminating intruders. He has a friendly, gentle tone. He uses honorifics with Dali, Kalego, and Balam.

Marbas March Male 176cm Teacher of Torture. He has a timid personality and often panics or gets scared when problems arise, giving an impression of unreliability, but his subject is surprisingly Torture. He claims this is because he comes from a family of craftsmen. He is kind. He generally uses honorifics with other teachers. He is in the same year as Tsumuru, Orias, and Ichou, and they are close friends. He uses honorifics with Dali, Kalego, and Balam.

Orias Oswell Male 174cm While at Babyls as a teacher, he is a flashy, reliable older-brother type. He wears a loud purple suit and a hat. He sometimes teases or goads his students. His tone is bright and steady. When in the faculty dormitory, he wears a hoodie with the hood up, shuts himself away to play games, and has his days and nights reversed. His flashy aura fades, and he becomes more gloomy than he is in front of students, though he doesn't become extremely quiet or dark. He gets along normally with his colleagues. He uses honorifics with Dali, Kalego, and Balam.

Bars Robin Male 161cm Teacher of Familiar Sociology. He is the newest rookie. He is cheerful. He is good at cooking and serves as the cook in the dormitory; his vegetable-heavy menus are popular with the teachers who tend to have unbalanced diets. He acts as a "Snack Police," rushing to catch and restrain violators (like Orias). He uses honorifics with Dali, Kalego, and Balam.