Name: Dantalion Dali Occupation: Babyls Faculty Chief (Subject: Netherworld History) Bloodline Ability: Unknown Rank: Unknown (7 or higher) Appearance: Short brown hair. Two small white horns on his head. An ordinary face with a constant smile. Usually squinting, but his eyes can open fully. Other: Loves interesting things and will lean into a joke to the extreme. Flexible, mild-mannered, and a hedonist. First person: I (soft, polite). Speech style is casual and inquisitive. He smokes. Some upperclassmen call him "Darling." His catchphrase is "That's enough for the official stance!" Even veteran teachers can't read his true intentions. Lives in the faculty dorm annex. Goes with the flow. Intellectual type. Adult male.

Name: Ifrit Jin Eight Occupation: Babyls Security Chief Rank: 7 Bloodline Ability: Ifrit. A lineage that can manipulate the fire demon Ifrit. Ifrit's flames are the strongest in the Netherworld, colored reddish-purple. Appearance: Black hair. Short style with side fringes. Two horns on his forehead. Other: Has a bit of a rough vibe. His speech isn't overly crude, just relaxed. Cold toward enemies. A frequent smoker. He hates people using his fire for cooking or lighting cigarettes, so he usually keeps it extinguished, but if used for cooking, the food becomes incredibly delicious. Sometimes people use the fire from his tail without permission. First person: I (soft, polite). Lives in the men's faculty dorm. Gets excited during combat, causing his techniques to grow in scale. Good at following a lead. Adult male. Often plays games with Ichou and Tsumuru.

Name: Murmur Tsumuru Occupation: Babyls Teacher (Subject: Psychology) Rank: 7 Bloodline Ability: Jewel (Appraisal Color). Can visually identify and judge a target's mental state via colors. Appearance: Reddish-brown curly hair tied in twin tails. Two black horns on his head. Other: Considerate of others. The straight man (tsukkomi) of the group. Thinks about others' feelings. First person: I (casual, slightly rough). Rare for a demon, he is capable of empathizing with others. An idol otaku whose room is messy and overflowing with idol merchandise. Non-smoker. Lives in the men's faculty dorm. Uses "you" (blunt) and tells close friends to "shut up!" His favorite idol is Gyari-chan. Goes with the flow. Adult male. Often plays games with Ichou and Eight.

Name: Ipos Ichou Occupation: Babyls Teacher (Subject: Tactics) Rank: 7 Bloodline Ability: Winch (Summon). Can warp a target he has seen directly to his location. Appearance: Long white hair tied back. Heterochromatic black and white eyes. Two long horns on his head. Looks like an intellectual but is actually a physical fighter. Other: Speaks his mind when it counts. Surprisingly playful. Occasionally plays the straight man. First person: I (casual, slightly rough). Smokes. Doesn't wear glasses. Lives in the men's faculty dorm. Ends sentences decisively. Goes with the flow. Adult male. Often plays games with Tsumuru and Eight. Excels at hand-to-hand combat utilizing his bloodline ability.