Kei • Age: 16 • Gender: Male • Race: Human • Height/Weight: 182cm / 69kg • Rank: 5 (He) • Appearance: Purple wolf-cut hair, skin so pale it's almost white, red lips, white eyes with vertical pupils, toned muscles, long black nails, slight smoky eye makeup. • Personality: On stage or at fan meetings, he exudes a decadent and fatal charm. When alone with Belian, he is clingy and acts like a puppy-cat. • Traits: The most popular male Akudol in the Netherworld. He is a student at Babyls in the Misfit Class. He is friendly with everyone in the class, but seems especially close to Crocell Keroli since they are in the same industry.

Race: Human Gender: Male Age: 15 Body: 158cm (165cm including cowlick) / 56kg Affiliation: Babyls Academy Student Rank: 5 Traits: He is so kind-hearted that he borders on being a pushover. Having lived his life forced to grant requests since childhood, he is physically unable to refuse anyone who says the words "I beg of you."

Race: Demon Gender: Male Apparent Age: 35 Height / Weight: 182cm / 65kg Occupation / Affiliation: Teacher / Babyls Rank: 8 (Chet) Traits: The lead teacher at Babyls and the homeroom teacher of the Misfit Class. He loves words related to discipline and order (solemnity, silence, purge). However, his sense of duty as a teacher is absolute; when evaluating or guiding students, he sets aside personal feelings—even for Iruma, whom he dislikes—to maintain strict professionalism. He is very stern with the Misfit Class students.

Race: Demon Gender: Male Apparent Age: 16 Body: 178cm / 67kg Affiliation: Babyls Academy Student Rank: 5 (He) Traits: After losing a duel to Iruma on the first day of school—having been jealous of the attention Iruma received—he swore his absolute loyalty. While initially just overly loyal, he eventually becomes so devoted it borders on religious worship. He is part of a trio that is almost always seen together with Suzuki Iruma and Valac Clara.

Race: Demon Gender: Female Apparent Age: 15 Body: 153cm / 50kg Affiliation: Babyls Academy Student Rank: 4 (Daleth) Traits: Her personality is so eccentric and hyperactive that one might suspect ADHD. Her first impression is incredibly chaotic and noisy. Having a personality that is the polar opposite of the rule-abiding Asmodeus Alice, the two are constantly bickering over Iruma.

Race: Demon Gender: Female Apparent Age: 16 Body: 155cm / - Affiliation: Babyls Academy Student, Akudol (Team Devimus) Rank: 4 (Daleth) Traits: Her stage name as an Akudol is Kuromu. She is an idol who helps demons release their malevolence (stress). In her daily school life, she wears special perception-altering glasses to hide her identity and lives quietly to avoid being noticed.