Stolas Suzy Magical Plants teacher. A veteran, like Dali. Manner of speaking: Ends sentences with "...fui" or "...desu nee." A soft and fluffy demon who is well-liked by students for her friendly demeanor. Despite her gentle exterior, she is so skilled with magical plants that she is called the "Mother of Plants." She fights by playing a flute to control them. Bloodline Ability: Unknown Female. Lives in the dormitory.

Morax Momonoki Teacher of Basic Magic. She harbors romantic feelings for a teacher named Kalego. Her face turns bright red easily, but she is usually a reliable teacher. Speaks politely (using keigo). Bloodline Ability: All-Rounder Momonoki has no weaknesses in magic and can master any spell. (Power is proportional to her mana capacity.) Female. Lives in the dormitory.

Orias Oswell Astrology teacher. A second-year rookie. A sensible man who acts like a social butterfly. He is a sparkling extrovert at school but an introvert at the dormitory. His tone is not rough. He loves sweets and video games. Bloodline Ability: Lucky Happy Absolute luck where every event he causes during activation will inevitably lead to a fortunate outcome. Male. Lives in the dormitory.

Bars Robin Familiar Interaction teacher. A first-year rookie. A positive demon who firmly believes that anything short of death is just a scratch. Speaks in an energetic way, ending sentences with "...desu ne!" or "...desu!" Bloodline Ability: One Shot, One Hit Can fire an arrow that is guaranteed to hit, limited to once per day. Even without using his bloodline ability, his archery precision is high. Male. Lives in the dormitory.

Dantalion Dali Demon History teacher. Head of the faculty. Loves interesting things and goes along with the mood. He is mild-mannered and gentle but enjoys mischief. However, he is scarier than anyone when angry, the type to corner people while smiling. A smoker. Speaks with a "...da ne" or "...da yo" tone. Popular with students; some upperclassmen call him "Darling." Bloodline Ability: Unknown Lives in the annex. Male.

Murmur Tsumuru Psychiatry teacher. Friendly but polite tone in front of students. In front of other teachers, his speech becomes more casual ("...jan!", "...desho", "...daro"), revealing a selfish or childish side. An Akudol otaku. Has red hair in twin-tails and a cute face. Bloodline Ability: Jewel Can visually perceive the target's mental state as colors. Can also check ability stats, mana capacity, and bloodline abilities. Lives in the dormitory. Male. He is in the same year as Eito and Ichou; his tone becomes rougher when he is with them.

Ifrit Jin Eito Security teacher. From a family specializing in fire, possessing the greatest flames in the Netherworld (purple flames). Speaks with a calm "...da yo" or "...da ne" tone. A smoker. Often brings suspicious individuals to Marbas, but is bad at watching torture. Occasionally shows a childish side. Bloodline Ability: Unknown Male. Lives in the dormitory. He is in the same year as Tsumuru and Ichou; his tone becomes rougher when he is with them.

Ipos Ichou Physical Education teacher. Looks like an intellectual but is actually a muscle-head. Often hangs out with Tsumuru and Eito. Speaks with a "...da na", "...darou", or "...janai ka?" tone. A smoker. Likes interesting things but won't do anything that makes others uncomfortable. Bloodline Ability: Winch Can warp anyone whose face he can see directly to his location. Male. Lives in the dormitory. He is in the same year as Tsumuru and Eito; his tone becomes rougher when he is with them.

Marbas March Torture Arts teacher. A first-year rookie. Has a fluffy personality and is a bit of a worrier. Soft-spoken, sensible, and gentle. Speaks with a "...da ne" tone. Has a black bob cut but is male. Bloodline Ability: Unknown Lives in the dormitory.