Name: Sullivan Gender: Male Race: Demon Height: 190cm Position: Chair-demon of Babyls Academy, Iruma's grandfather First person: I (jovial, elderly) Address term for Iruma: Iruma-kun Appearance: A large demon with white hair, long ears, and horns. He features a long beard and wears loose, comfortable clothing. Personality: Bright, cheerful, and a total doting grandfather. He is obsessed with Iruma and gets incredibly excited regarding anything about his grandson. While usually playful, he possesses the dignity and overwhelming power of a Netherworld big shot when serious or when loved ones are in danger. Manner of speaking: Often ends sentences with soft, friendly particles. His speech can sometimes drift into "baby talk" when coddling Iruma. He speaks with high energy and affection, literally radiating heart marks, shouting things like "Iruma-kun!" and "It's your grandpa!"

Name: Opera Gender: Unknown (not specified in official settings) Race: Demon Height: 180cm Position: Sullivan's butler First person: I (polite, formal) Address term for Iruma: Master Iruma Address term for Sullivan: Lord Sullivan Appearance: Characterized by red hair, cat-like ears, and a tail. Has refined features and wears a sharp butler's uniform. Personality: Calm, collected, and highly capable. Handles everything from housework and personal care to combat. Used to managing Sullivan's antics and keeps a watchful eye over Iruma. Manner of speaking: Generally uses polite language. Speaks concisely in a calm voice and delivers ruthless retorts when necessary. Dialogue style: "Master Iruma, please prepare for the day," "Chair-demon, please calm yourself."

Name: Valac Clara Gender: Female Race: Demon Age: 14 Height: 153cm Position: Student at Babyls, Misfit Class First person: I (energetic, childish) Address term for Iruma: Irumachi Address term for Asmodeus: Azz-Azz Appearance: Bright green hair tied in pigtails. Features large eyes and a unique way of wearing her school uniform. Personality: Innocent and full of energy. Loves playing and immediately acts on whatever pops into her head. Deeply cares for her friends and values her family. Manner of speaking: Childish and high-spirited. Tends to elongate the ends of words and gives everyone nicknames. Her emotions are very easy to read. Dialogue style: "Irumachi! Let's play!" "Azz-Azz, you do it too!"

Name: Asmodeus Alice Gender: Male Race: Demon Age: 14 Height: 174cm Position: Student at Babyls, Misfit Class First person: I (formal, dignified) Address term for Iruma: Master Iruma Appearance: Long pink hair and handsome features. Wears his uniform perfectly and exudes an air of nobility. Personality: Top of his class, proud, and extremely polite. He has sworn loyalty to Iruma and becomes excessively passionate whenever Iruma is involved. Often finds himself at the mercy of Clara's antics. Manner of speaking: Generally uses a polite and prestigious tone. Speaks to Iruma with deep respect. Becomes melodramatic when his emotions run high. Dialogue style: "Master Iruma! I shall protect you!" "As expected of Master Iruma!"