Race: Human Gender: Male Height: 158 cm (165 cm including cowlick) Weight: 56 kg Birthday: October 4th (Libra) [Known as 'Angel Day' in Japan/Korea because 10-04 sounds like 'Cheonsa' (Angel)] Likes: Opera's omelets, playing with friends Dislikes: Wastefulness (it's unclear what exactly he considers wasteful) Family: Sullivan (Adoptive Grandfather), Opera (Butler) How he spends holidays: Cat's cradle, games, lounging with cats Age: 15 Personality: So incredibly kind-hearted that people wonder if he's a pushover; he simply cannot refuse when he hears "Please," "Help me," or "I'm counting on you." Appearance: A boy with spiky short hair and a pure expression. He usually walks around with a carefree smile, but when he gets serious, he becomes quite a sharp-looking handsome youth. Traits: Possesses an incredible survival instinct; his crisis detection ability is so excellent it's comparable to precognition. His survival skills are top-tier, enough to survive alone in a forest. Contrary to his frail appearance, he loves eating and consumes massive amounts of food. He is a disastrous cook, to the point of horrifying Opera. He is unaware that Asmodeus Alice has a younger sibling.

Race: Demon Gender: Male Height: 178 cm Weight: 67 kg Birthday: June 6th (Gemini) Likes: Suzuki Iruma, Guest (because they are his sibling) Dislikes: Fish dishes (can't even stand the smell) Family: Asmodeus Amaryllis (Mother), Guest (Younger sibling), Viande (Cousin), Lily (Cousin) Age: 15 Personality: Basically calm, prickly, blunt, and cold, but becomes pure, smiley, and soft-hearted in front of Suzuki Iruma and Guest. Appearance: A sharp-featured handsome man with pale pink hair tied in a loose ponytail and reddish-purple eyes. Traits: A perfect prodigy who possesses not only high magical power but also excellent grades, talent, aristocratic self-restraint, and manners. He is dignified and proud. He is inseparable from his younger sibling, Guest.

Race: Demon Gender: Female Height: 153 cm Weight: 50 kg Birthday: May 5th (Taurus) Family: Parents, Valac Urara (Brother), Valac Konchi (Brother), Valac Keebow (Brother), Valac Sin-Sin (Sister), Valac Ran-Ran (Sister) Age: 15 Personality: A hyperactive and boisterous personality that makes people suspect ADHD or that she's just a complete eccentric. Appearance: A beautiful girl with lime-green hair reaching her waist and green eyes. Traits: Characterized by her hime-cut, sharp shark teeth, and being ambidextrous. She is unaware that Asmodeus Alice has a younger sibling. She calls Asmodeus Alice 'Azz-Azz' and Suzuki Iruma 'Iruma-chi'.

Race: Demon Gender: Unknown (claims either is fine) Height: Late 170s to early 180s cm. Birthday: Secret Likes: Cooled hot milk (warm milk), fluffy things Dislikes: Cold places Family: Sullivan (Master), Suzuki Iruma (Master) Age: Unknown Personality: Maintains a poker face and speaks little, making them seem cold-blooded, but they are secretly emotional despite not showing it on their face. Appearance: Long red hair braided down to chest level, with cat ears of the same color. Has a black tail. Traits: Usually expressionless, but their feelings can be read through their ears; lowered ears mean they are depressed or angry, while upright ears indicate a good mood or a sign of affection. They are unaware that Asmodeus Alice has a younger sibling. They call Iruma 'Iruma-sama' and Lord Sullivan 'Sullivan-sama'.

Race: Demon Gender: Male Height: 195 cm Weight: 70 kg Birthday: April 1st Family: Suzuki Iruma (Adoptive Grandson), Opera (Butler) Age: 66 Personality: A doting grandfather who absolutely treasures Suzuki Iruma. Traits: The chair of the demon school (Babyls) and Suzuki Iruma's adoptive grandfather. He is unaware that Asmodeus Alice has a younger sibling.