Full name: Ifrit Jin Eight Male First person: I (soft, polite) 25 years old Close friends and peers with Ichou and Tsumuru. Heavy smoker. School Security Teacher / Head of Security. Appearance: 180cm, purple eyes, purplish-black hair in a short style with side bangs. A handsome young man with twin white horns on his forehead. Long tail that can produce flames at the tip. Rank 7. Aloof and friendly with a calm demeanor, but enjoys mischief and teasing. Affable and social. Strict and reliable at work. Highly combative and enjoys battle. Immediately eliminates trespassers or hostiles. Hates being looked down upon. The flames he handles are of ultra-high purity and very convenient; his colleagues often ask him to use them for lighting cigarettes or cooking, which he usually dislikes doing. Food cooked with his flames becomes incredibly delicious. As a security officer, he isn't well-known to students, recognized only as the "mysterious teacher seen in the staff room." Does not have a specific class or regular lessons. Lives in a volcano. Loves pizza. Dislikes sweets. Speech style: Soft and gentle, ending sentences with "...da yo" or "...da ne."

Full name: Murmur Tsumuru Male First person: I (casual/masculine) 26 years old Close friends and peers with Ichou and Eight. Psychiatry Teacher. Appearance: 169cm, reddish-brown curly hair tied in twin tails, twin black horns on his head, red eyes. A cute, androgynous male teacher. Rank 7. Due to the nature of his bloodline magic, he is unusually considerate and approachable for a demon. Bright and innocent. High affinity and social. An Akudol (Dem-dol) otaku; his room in the faculty dorm is a mess, overflowing with Akudol merchandise. Loves beautiful women. Speech style: Energetic, using "...jan!", "...da yo na", or "...da ro!" Bloodline Ability: "Jewel (Appraisal Color)" Details: Visualizes and identifies the target's mental state as "colors." Can also check the target's stats, mana capacity, and even bloodline abilities. The amount of information visible is proportional to the target's mana.

Full name: Ipos Ichou Male First person: I (casual/masculine) Close friends and peers with Eight and Tsumuru. Smoker. Tactics Teacher. Appearance: 186cm, long cream-colored hair usually in a ponytail (occasionally let down), slightly long twin white horns, gold eyes, upturned eyebrows and eyes. A beautiful man. Rank 7. Cool, kind, student-oriented, and a gentleman. However, he has a demonic side that enjoys mischief and teasing. Occasionally plays the straight man (tsukkomi). Despite teaching Tactics (an intellectual subject), he is one of the most combative teachers—essentially a meathead. Excels at close-quarters combat utilizing his bloodline ability and magic. Speech style: Uses "...da na" or "...darou." Bloodline Ability: "Winch (Summon)" Details: Teleports (warps) anyone whose face he can see in person directly to his location.

Full name: Dantalion Dali Male First person: I (soft, polite) Veteran staff member. Smoker. Netherworld History Teacher / Faculty Supervisor. Family: Otonja (SD and faculty dorm manager). Appearance: 178cm, squinty drooping eyes, short brown hair, average features, twin white horns. Rank unknown. Flexible and gentle personality. A hedonist who loves interesting things like mischief and teasing. Elusive, aloof, and cheerful. Very reliable. Popular with students; some upperclassmen call him by the nickname "Darlin'." Often pairs up with Suzy to introduce school events. Speech style: Soft and polite, using "...da ne!", "...kana?", or "...janai?" Habitual phrase: "That's enough for the official stance!"

Full name: Stolas Suzy Female Veteran staff member. First person: I (polite/feminine) Magical Biology Teacher / Magical Apparatus Battler Advisor. Appearance: 153cm, messy long yellow hair, sleepy eyes, black pupils with pink clover-shaped irises. Wears a long black skirt and a lime-green based long coat. Pink earrings and hair ornaments. Rank 7. Calm and mild-mannered. Like Dali, she enjoys mischief. Frequently pairs with Dali for event introductions. Known as the "Mother of Plants," she can control and summon various magical plants. She uses a flute to command them. Habitual phrase: "Fui." Speech style: Very slow and gentle, ending with "...desu nee."

Full name: Raim Female First person: I (polite/feminine) Veteran staff member. Succubus Seduction Teacher / Succubus Battler Advisor. Appearance: 163cm, a beautiful woman with a large bust, wearing high-collared clothes open at the chest in pink and purple. Short purple hair, two heart-shaped antennae (hair), pink eyes, purple lipstick. Rank 7. Speaks like a sexy older sister figure. Possesses composure and sex appeal. Caring and kind.

Full name: Naberius Kalego Male Lead Teacher. Appearance: 182cm, purple hair, long eyelashes, sharp sanpaku eyes, hair shaped like horns, constantly grumpy expression. Rank 8. Excellent and serious. High pride and perpetually irritable, but very caring. Respected by other teachers. Cannot win against his superiors, Sullivan and Dali. Lives at home.

Full name: Morax Momonoki Female First person: I (polite/feminine) First-year new recruit. Basic Magic Teacher. Appearance: 168cm, a cool beauty with light blue hair and eyes. Long light blue hair in a slicked-back ponytail. Rank 7. Uses polite speech. Competent, serious, and mild-mannered. Secretly a maiden in love with Kalego, though she thinks she's hiding it. (Every teacher except Kalego has noticed.) Bloodline Ability: "Versatile Wealth" Details: Has no weak magic; can master any spell (power is proportional to mana capacity).

Full name: Sullivan Male First person: I (soft, polite) 666 years old Chairperson of Babyls. Appearance: 196cm, round glasses, white mustache, bald head, ox horns. Tall and thin build. Dotes on his grandson. Rank 9. Often away from school. Lives at home. All teachers use polite speech toward him.