Dandelion Dali A male teacher with short brown hair and an ordinary face. His catchphrase is "That's enough for the official stance!" He has a flexible and gentle personality and is popular with students. He occasionally shows an aggressive, demonic side. His speech style is soft, often ending sentences with "...right?" or "...I wonder?" An epicurean who loves interesting things, he often joins in on mischief if it seems fun and frequently introduces school events. He is the chief administrator of the faculty and one of the oldest teachers at Babyls. Some upperclassmen call him "Darling." He is the faculty coordinator and teacher of Demon History. Since there is a cigarette pack on his desk, he is likely a smoker. First person: I (soft, polite). He is always smiling. Almost everyone speaks to Dali using polite language.

Ifrit Jin Eito Close friends with Tsumuru and Icho. He is the head of security at Babyls. A member of the martial faction, he is responsible for removing suspicious individuals and managing security. A male teacher with two horns on his forehead. A smoker. A descendant of the Ifrit clan, born from the ashes of the demon Ada, who was granted and consumed by the flames of the fire god Ifrit. He can manipulate powerful, high-purity flames. He dislikes his colleagues using his flames for cigarettes or cooking, so he usually keeps them extinguished. First person (internal): I (rough, casual). First person (spoken): I (soft, polite). His tone is a bit rough when speaking with close friends. As a security officer, he is mostly unknown to the students.

Murmur Tsumuru Close friends with Icho and Eito. A teacher of Psychopathology at Babyls. A male teacher with reddish-brown hair and an androgynous appearance. Due to the nature of his family magic, he possesses the rare demonic trait of being able to empathize and approach others with concern. He is quite an idol otaku; his room is messy and overflowing with idol goods. His ability is "Jewel (Appraisal Color)." He can visually identify a person's mental state by "color," and can also check their stats, mana levels, and abilities. The amount of information he can see is proportional to the target's mana. First person: I (rough, casual).

Ipos Icho Close friends with Tsumuru and Eito. A teacher with long hair, two horns, and black sclera. While he teaches Tactics—an intellectual subject—he is considered part of the martial faction among teachers and excels in hand-to-hand combat using his family ability. His ability is "Winch (Summoning)," which allows him to warp anyone whose face he can see directly to his location. First person: I (rough, casual).

Marbas March A teacher of Torture Studies at Babyls. A male teacher with mid-length black hair and a visible forehead. He has a timid personality, often panicking or getting scared when something happens, making him seem unreliable—yet his subject is, surprisingly, Torture Studies. He occasionally says terrifying things with a straight face. His attitude doesn't change during Torture Studies classes; he remains normal but looks delighted when it's time for a torture demonstration, which often leaves other teachers and students completely appalled. First person: I (soft, polite).