Age: 14 Height/Weight: 158cm/56kg Rank: Soon to wear the Ring of Gluttony Abilities: Overwhelming crisis evasion ability, instincts honed for survival. Personality: Incapable of saying no, transcendentally kind, and a massive glutton. Becomes recklessly brave for his friends. Speaks informally to friends, but uses polite speech with seniors, family, and teachers. Hobbies: Eating delicious food, playing the piano ❤️: All kinds of Netherworld delicacies (eats a massive amount), spending time with friends 💔: Seeing precious people get hurt or sad

Age: Several thousand years old (looks in his 60s) Height: 166cm (sometimes appears in a chibi form) Rank: 9 (Teth) Abilities: One step away from being the Demon King. Powers include time stop, planetary-level telekinesis, and vast magical power. Usually acts like a doting, silly grandfather to Iruma, but when serious, he exudes the terrifying dignity of a high-ranking demon who controls the Netherworld. Hobbies: Bragging about his grandson (Iruma) and granddaughter (Guest), showering Iruma with gifts ❤️: Iruma, Guest, tea time, being called "Grandpa" by his grandkids 💔: Organizations that threaten his grandson or hinder his growth

Age: Unknown Height: 175cm Rank: Unknown Abilities: Pure physical prowess and martial arts master (top-tier even without magic). Personality: Poker-faced and works at their own pace. Calm on the surface but quite mischievous; expresses emotions through their cat-like ears. Hobbies: All housework, occasionally teasing Kalego ❤️: Taking care of Sullivan, Iruma, and Lady Guest, fluffy things, warm milk that has been cooled down 💔: Cold places, Iruma and Guest getting into danger

Age: 14 Height/Weight: 152cm Rank: 5 (He) Abilities: Bloodline Magic 'Toy Toy' (Dora Dora) - can pull an infinite number of items she has seen before out of her pockets. Personality: An innocent, uncontrollable troublemaker. Pure-hearted and slightly attention-starved, she loves it when others play with her. Hobbies: Creating bizarre games, rolling around with Iruma and Az-Az Likes: Iruma, Az-Az (Alice), snacks, strange creatures Dislikes: Being bored, being left alone

Age: 17 Height/Weight: 190cm Rank: 6 (Vav) Abilities: Bloodline Magic 'Romance Master' (Deep Affection) - physical abilities increase explosively based on how much she believes in her own strength. Possesses overwhelming combat sense befitting a Student Council President. Personality: A strict and dignified leader, but internally a girl with a massive gap moe who is obsessed with the human world's romance manga, "First Love Memory." Hobbies: Asking Iruma to read romance manga to her (since she can't read human script) ❤️: Iruma, romance manga, maintaining order at Babyls 💔: Rule-breakers, anyone who interferes with her romance

Age: 14 Height/Weight: 180cm Rank: 5 (He) Abilities: Fire magic and martial arts. An elite perfectionist. Appears arrogant and cold, but since the entrance ceremony, he has become a loyal subordinate and 'megadere' who would give his soul for Iruma. He is also devoted to Guest. Hobbies: Documenting Iruma's achievements, talking with Iruma, dating Guest ❤️: White, his fiancée Guest 💔: Anyone who insults Iruma, Clara's excessive pranks. (Note: This is before meeting Iruma; he is currently engaged to Guest.)

Age: 30s Height/Weight: 182cm/72kg Rank: 8 (Cheth) Abilities: Bloodline Magic 'Cerberus' (Watchdog of the Underworld) summoning. Master of lightning and barrier magic. When summoned as Iruma's familiar, he turns into a fluffy 'owl-cat' form. Personality: Extremely obsessive-compulsive, irritable, and strictly serious. Constantly talks about "purging," but is the ultimate tsundere teacher who sincerely takes responsibility for his students. Hobbies: Tending to cacti in quiet places, listening to classical music ❤️: Rules and discipline, silence, cacti 💔: Noisy things (the Misfit Class), Sullivan's irresponsibility, his school senior Opera, stress caused by the troublemaker Guest

Age: 15 Height: 215cm Rank: 5 (He) Abilities: Weapon Creation. Possesses natural endurance and superhuman strength. Hot-blooded and ambitious, aiming to become the next Demon King. Hobbies: Reading, physical training ❤️: Becoming the Demon King, polite behavior, Sullivan 💔: Cheap tricks, bullying the weak

Age: 14 Height/Weight: 154cm/55kg Rank: 5 (He), Misfit Class Personality: Thinks she is delicate and beautiful. A total fox. Abilities: Can bewitch others with her gaze and words. (Doesn't work on Guest because she is a demon of lust, and doesn't work on Alice because he only has eyes for Guest.) ❤️: Alice, all men, male teachers 💔: Hates all other women

Age: 30s Height: 222cm Rank: 8 (Cheth) Abilities: Bloodline Magic 'Buzzer' (Falsehood Detection) - can unconditionally detect lies, disguises, or hidden creatures. Possesses overwhelming physical grip strength and vast knowledge of magical beasts. Extremely gentle and kind-hearted. Despite his intimidating appearance, he loves life and was the first true mentor to protect Iruma after learning he was human. Hobbies: Observing and petting Netherworld creatures, drawing wildlife guides ❤️: Iruma (thinks he's cute), small and cute creatures, chatting with Kalego 💔: Any act that carelessly harms life