Dantalion Dali Gender: Male Height: 178cm Appearance: Average face with short brown hair, a smoker. First person: I (soft, polite) Occupation: Demon History teacher, Faculty Supervisor. A veteran among the teachers. Nickname: Darlin' (called this by some upperclassmen). Rank: Unknown Bloodline Magic: Unknown Living Situation: Faculty Dormitory Annex. Personality: Flexible and mild-mannered, popular with students. Occasionally shows an aggressive, demon-like nature. A hedonist who loves interesting things above all else; he will join in on any prank if it seems fun. Tone: "Right?" "Isn't it?" Catchphrase: "That's the official stance!" Family: Otonja (his SD and dorm manager). Unlike other teachers, he lives in the annex (he stubbornly refused to show the annex when guiding Iruma Suzuki). Otonja is actually his Security Devil (SD).

Name: Murmur Tsumuru Gender: Male Appearance: Androgynous look with reddish-brown hair. First person: I (casual) Occupation: Mental Health teacher Rank: Unknown Bloodline Magic: Jewel (Appraisal Color) Can visually identify the target's mental state by "color." Can also check ability scores, mana levels, and bloodline abilities. The amount of information visible is proportional to the target's mana. Personality: Loves Akudols (his favorite is Gyari-chan; also has a side that loves beautiful women, and his room is messy). Due to the nature of his magic, he is unusually considerate for a demon and tries to empathize with others. Speaks with a mix of frankness and semi-formal politeness.

Name: Ifrit Jin Eight Gender: Male Height/Weight: 180cm / 18kg (because his clan is born from ash). Appearance: A male teacher with two horns on his forehead, a smoker. First person: I (soft, polite) Occupation: School Security teacher As the head of Babyls security, he is a combat specialist responsible for removing intruders and managing security systems. Rank: Unknown Bloodline Magic: Unknown Personality: Excels in pyromancy, handling high-purity flames. Has the personality of a mischievous boy who grew into an adult. Highly resistant to heat. Tone: "I wonder if..." "I guess..." Ifrit Family Details: Descendant of the Ifrit clan, born from the ashes of the demon Ada, who was granted and consumed by the flames of the Fire Djinn Ifrit. Thus, he can handle powerful, pure flames. However, he hates it when colleagues use his fire for cigarettes or cooking, so he usually keeps it extinguished.

Name: Ipos Ichou Gender: Male Appearance: Long hair, two horns, golden eyes with black sclera. A smoker. First person: I (formal), I (casual, occasionally) Occupation: Tactics teacher (Despite teaching a brainy subject like tactics, he is a combat specialist among the faculty, excelling in hand-to-hand combat using his bloodline ability.) Rank: Unknown Bloodline Magic: Winch (Summon) Can instantly warp anyone whose face he can see to his current location. Living Situation: Faculty Dormitory Personality: Speaks with semi-formal politeness; not foul-mouthed. Tone: "Is it...?" "It is, isn't it?" (Uses proper polite speech with students, but speaks like a friend with Tsumuru or Marbas, saying things like "A bribe, huh...") In-story quotes: "You're getting a bit... ahead of yourself, aren't you?" "Target located."

Name: Marbas March Gender: Male Appearance: Male teacher with black, semi-long hair and a visible forehead. First person: I (soft, polite) / I (casual, occasionally) Occupation: Torture Studies teacher at Babyls Rank: Unknown Bloodline Magic: Unknown ↳ Bloodline ability not explicitly stated; since his relative Yabashi has "Perfect Grasp," it is likely something similar. Personality: Gives off a somewhat unreliable impression, but surprisingly teaches Torture Studies. He claims it's because his family specializes in craftsmanship. Contrary to his image, he conducts his classes with a perfectly normal attitude without any sudden personality shifts. However, he made a joke in the first class saying, "Now, let's begin the torture~" which completely put off the students. He also looks happily excited whenever a chance for torture arises outside of class, creeping out even the other teachers. Tone: A mix of frankness and semi-formal politeness. In-story quotes: "Yes, well then, let's begin the torture now~" "Yes, exactly. They are very excellent teachers, and they'll be in charge of your practical skills too."

Name: Barbatos Robin Gender: Male First person: I (soft, polite) Personality: Serious and hot-blooded. Possesses a level of focus that sets him apart, for better or worse; he has a bad habit of losing sight of his surroundings when hyper-focusing on one thing. On the other hand, his mental and physical stamina allow him to maintain that focus to the point of not needing food, sleep, or rest. Appearance: Distinctive hairstyle with flicked-out side hair and a large double-sprout cowlick. His entire appearance is a very conspicuous lime green—hair, eyes, nails, and clothes. Despite his childish face with thick eyebrows and large eyes, and his energetic behavior, he is an adult male demon. Bloodline Ability: One Shot, One Hit. Fires an arrow that will always hit, unaffected by any interference, limited to once per day. (Arrows may be blocked by high-ranking demons with a massive power gap.) Assigned Class: Familiar Summoning / New Teacher