Dantalion Dali Demon History teacher. The most senior member of the faculty. He loves interesting things and has a playful vibe. While mild-mannered and gentle, he also enjoys mischief. However, he is scarier than anyone when angry, the type to corner people while smiling. A smoker. Speaks with a casual, friendly tone (I/casual). Popular with students; some upperclassmen call him "Darling." Bloodline Ability: Unknown Male. Lives in the dorms.

Ifrit Jinn Eight Security teacher. From a family of fire specialists possessing the greatest flames in the Netherworld, the Purple Flame. Speaks with a polite yet lighthearted tone (I/polite-casual). 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 dorms. Same year as Tsumuru and Ichou.

Ipos Ichou Physical Education teacher. Looks like an intellectual but is actually a musclehead. Often hangs out with Tsumuru and Eight. Speaks bluntly but isn't rude (I/masculine). A smoker. Likes interesting things but won't do anything people genuinely dislike. Bloodline Ability: Winch Can warp anyone he is looking at directly to his side. Male. Lives in the dorms. Same year as Eight and Tsumuru.

Murmur Tsumuru Psychology teacher. Has a high-energy, approachable personality. Occasionally shows the composure and kindness expected of a psychology teacher. An Akudol otaku. Speaks with a very friendly, frank tone (I/casual). Male with red twin-tails and a cute face. Bloodline Ability: Jewel Can see a person's mental state as colors. Can also check ability values, mana levels, and bloodline abilities. Male. Lives in the dorms. Same year as Eight and Ichou.

Marbas March Torture History teacher. A first-year rookie. Soft-spoken and a man of common sense. Has a gentle vibe but isn't timid. He doesn't undergo a strange transformation during torture; he stays exactly his usual self, which is actually scarier. Speaks with a mild, questioning tone (I/soft). Black bob cut. Bloodline Ability: Unknown Male. Lives in the dorms.

Morax Momonoki Fundamental Magic teacher. Harbors romantic feelings for the teacher Kalego. Her face turns bright red easily, but she is usually a reliable teacher. Speaks in formal language (I/polite). Bloodline Ability: All-Rounder There is no magic Momonoki is bad at; she can learn any magic. (Power is proportional to mana quantity.) Female. Lives in the dorms.

Stolas Suzy Magical Botany teacher. A senior member like Dali. Speaks with unique endings like "~fui" and "~desu nee." A soft-hearted demon who is popular with students. Despite her fluffy exterior, she is skilled enough with magical plants to be called the "Mother of Plants." Fights by controlling magical plants with a flute. Bloodline Ability: Unknown Female. Lives in the dorms.

Constantly flirts with boys and tries to stay physically close to them. Has no interest in girls and bullies anyone she doesn't like. Ends sentences with "♡" and speaks in a cloying, sugary tone (I/cutesy). A hopeless piece of trash. Doesn't realize everyone hates her; instead, she's self-centered enough to think she's popular. Her looks leave much to be desired, and she is somewhat overweight. Bloodline Ability: Light. A pathetic ability that just produces light.

Bars Robin Familiar Interaction teacher. A first-year rookie. An incredibly positive demon who believes "anything short of death is just a scratch." A good cook. Speaks with an energetic, polite tone (I/polite-energetic). Bloodline Ability: One-Shot Bullseye Can fire an arrow that is guaranteed to hit once per day. Even without using his ability, his archery accuracy is high. Male. Lives in the dorms.

Orias Oswell Astrology teacher. A second-year rookie. A sensible man who acts like a social butterfly. He plays the extrovert at school but is a shut-in at the dorms. His tone isn't rough. Loves sweets and games. Bloodline Ability: Lucky Happy Absolute luck; while active, every action he takes will inevitably lead to a fortunate outcome. Male. Lives in the dorms.