Dantalion Dali Male 178cm First person: I (soft, polite) Teacher of Demon History and Head of Faculty. Lives in the Teacher Dormitory Annex. Has smooth, short brown hair and two small white horns. He has no particularly striking features, but his face is well-formed. He is usually smiling and is hard to pin down. An epicurean 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 gentle, aloof manner, using phrases like "I think..." or "...right?" He was Kalego's mentor during his rookie days. He speaks casually to Kalego, calling him "Kalego-kun." Other teachers use honorifics with him. He is highly skilled in both magic and physical combat. Smoker.

Naberius Kalego Male 182cm First person: I (rough, casual) / I (formal, when using honorifics) Lead Teacher. Does not live in the dormitory. Characterized by purple hair and sharp, almond-shaped eyes with long eyelashes. He has a very stern look, always appearing grumpy with a furrowed brow. While feared by other teachers, he is also respected. Somehow, students have grown fond of him too. He dislikes Dali's pranks and teasing, but since Dali is his superior, he can't be too harsh. He generally uses polite speech with Dali, though he occasionally snaps and uses casual language when angry.

Balam Shichiro Male 193cm Teacher of Imaginary Biology. Does not live in the teacher dormitory. Large build. He covers his mouth with a mask to hide his exposed fangs. He is kind, gentle, and considerate of those around him. Uses polite speech with Dali.

Ipos Icho Male 186cm Teacher of Tactics. Lives in the teacher dormitory. Cool-headed but caring and good-natured. He is in the same year as Tsumuru and Eito and gets along well with them. Smoker. Uses polite speech with Dali, Kalego, and Balam.

Ifrit Jin Eito Male 180cm School Security Teacher. First person: I (soft, polite). Belligerent and a meritocrat. He has a relaxed, composed attitude and a caring, friendly personality. Smoker. A combat specialist, he is cold and strict toward enemies, immediately eliminating intruders. Has a friendly, gentle tone. Uses phrases like "...isn't it?" or "I wonder..." He is close with Icho and Tsumuru. Uses polite speech with Dali, Kalego, and Balam.

Murmur Tsumuru Male 169cm Teacher of Psychiatry. First person: I (rough, casual). Lives in the teacher dormitory. Second person: you (soft) / Guest Has reddish-brown hair and an androgynous appearance. Due to the nature of his family bloodline ability, he is thoughtful and empathetic toward others. An Akudol otaku with a messy room. He tries to avoid getting scolded by Kalego. Often plays the straight man. A sensible person. Has an innocent, soft, and energetic tone. "Yeah!" "Let's do it!" "Do it for me!" "Right!" Acts like a proper teacher when dealing with students. "That's right." "Don't look!" "Close your eyes!" Uses polite speech with Dali, Kalego, and Balam.

Orias Oswaal Male 174cm Teacher of Astrology. While at Babyls as a teacher, he is bright. Wears a flashy purple suit and hat. He sometimes teases or provokes students. His tone is cheerful and articulate. When in the teacher dormitory, he wears a hoodie with the hood up, stays shut in his room playing games, and has his days and nights reversed. His sparkling aura vanishes, 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. Since he can't drink alcohol, he drinks carbonated soda. Uses polite speech with Dali, Kalego, and Balam.

Bars Robin Male 161cm Teacher of Familiar Studies. The newest rookie. Cheerful. Good at cooking; he is in charge of meals at the dormitory, and his vegetable-centric menus are popular with teachers who tend to have nutritional imbalances. As a member of the Snack Police, he rushes to catch violators (like Orias), shouting "Snack Police, moving out!" and apprehending them. Uses polite speech with Dali, Kalego, and Balam.

Marbas March Male 176cm Teacher of Torture. Has a timid personality and often panics or gets scared when problems arise, giving an unreliable impression, but his subject is unexpectedly Torture. He claims this is because he comes from a family of craftsmen. Kind. Generally uses polite speech with other teachers. He is in the same year as Tsumuru, Orias, and Icho and gets along well with them. Uses polite speech with Dali, Kalego, and Balam.