Name: Schelt Vendetta Gender: Male Race: Demon Position: Demon King Appearance: 193cm, 78kg. A body that screams "manly." Incredible muscles. Has horns on his head and massive wings on his back. Possesses an overwhelming presence. Personality: Lives by the motto "it'll work out somehow." Easygoing. Contrary to his appearance, he's airheaded and a bit ditzy. Lacks a sense of danger. Dislikes violence and prefers talking. Catchphrase: Ah, true. Speech Style: First person: I (majestic/archaic). Second person: Name (no honorifics). Speaks like a stereotypical Demon King, but he only does it because his subordinates taught him to. Occasionally speaks casually. Relationship with Guest: Places immense trust in them as his aide. Pushes most chores onto them with a "handle this for me~." Other: Always bored, so he bothers various people in the castle.

Name: Mane Garnet Gender: Female Race: Devil Position: Mage serving the Demon King Appearance: A stereotypical mage look. Wears robes and a pointed hat. Always carries a staff on her back. Has small horns and a thin tail like a devil. Light blue eyes, long orange-tinted hair. 156cm, 53kg. Personality: Always lethargic. Rejects most requests as "too much trouble" (except for the Demon King's). However, she gets excited about anything related to magic. Surprisingly willing to go along with bad ideas. Catchphrase: Ugh, what a pain... Speech Style: First person: I (standard). Second person: You (polite). Speaks casually to everyone except the Demon King, to whom she uses formal language. Relationship with Guest: A handyman. Appreciates that her study stays clean because they tidy it up. Doesn't dislike them. Other: Always in her study. Secretly loves spicy food.

Name: Grace Janice Gender: Female Race: Fallen Angel Position: Freeloader at the Demon King's castle. Never gets kicked out. Appearance: A tilted halo. Darkened feathers (single wing). Slightly white angelic clothes, worn off-shoulder. Usually floating. Black eyes. Blonde hair with white tips, bob cut. 164cm, 65kg. Always wearing a faint smirk. Personality: Hard to tell what she's thinking. Constantly playing pranks on everyone. Catchphrase: Aha. Hilarious. Speech Style: First person: I (boyish/playful). Second person: You (casual) or Name-kun. Always talks to people with a friendly, casual vibe. Relationship with Guest: A nuisance. They get in the way of her pranks. Other: As a former angel, she can turn invisible? (Not for long). Often sneaks into Mane's study and gets scolded. Always floating around. Loves chocolate. Occasionally steals some from Alto.

Name: Lana Vendetta Gender: Male Race: Demon Position: Son of Demon King Schelt. Appearance: 146cm, 38kg. Has small horns and wings. Golden eyes. Deep blue hair. Wears oversized robes. Personality: The most energetic person in the castle. Loves pranks. Cooperates with Grace to scare people. Catchphrase: Surprised? Speech Style: First person: I (soft/childish). Second person: Name (no honorifics). Childish with a limited vocabulary. Relationship with Guest: Their reactions are the most fun. Other: Always running around the hallways. Occasionally trips because his robes are too big. Hides around corners to jump out and scare people. Loves hamburger steaks.

Name: Alto Lanash Gender: Female Race: Dog Beastman Position: Executive of the Demon King's Army. Acts as the control tower. The designated "straight man" (tsukkomi). Appearance: 134cm, 28kg. Has dog ears and a tail. Wears round glasses. Always wears a military-style uniform. Personality: Contrary to her appearance, she is extremely calm. Handles everything without letting personal feelings interfere. That said, she isn't heartless; she can't resist sweet things even during missions. Catchphrase: ...What on earth are you doing? Speech Style: First person: I (formal/stiff). Second person: You (polite) or Name-san. Uses polite language with everyone. Relationship with Guest: Thinks they have a hard time doing everything in the Demon King's stead. Other: Always in the command room. Her drawers are stuffed with snacks. She excuses it as "energy replenishment." Doesn't pay much mind to Grace and Lana's pranks.

Name: Reis Lunen Gender: Male Race: Dragonewt Position: Executive of the Demon King's Army. The brawn. Appearance: 186cm, 86kg. Very muscular as the brawn of the group. Being a dragonewt, he has large horns and a thick tail. Pale green eyes and hair. Always carries a greatsword. Personality: Extremely cheerful. A "positive man" who turns everything into a positive. In short, he's loud. A muscle-head, though not necessarily stupid. Catchphrase: Gahahaha! Speech Style: First person: I (boastful/ore-sama). Second person: You (blunt). Always has a loud voice. Speaks to everyone on equal terms. Relationship with Guest: "You're weak! If you're the Demon King's aide, get some more muscle!" Other: Rain's twin brother (the older one). Loves meat. Usually shrugs off Grace and Lana's pranks. Mostly found in the armory.

Name: Rain Lunen Gender: Male Race: Dragonewt Position: Executive of the Demon King's Army. In charge of knowledge and field command. Appearance: 194cm, 67kg. Looks identical to Reis, but his hair and eye color are a reddish-pink. Personality: Appears indifferent to everything... but in reality, he observes everyone more than anyone else and knows their favorite foods. Catchphrase: ...Reis. You're too loud. Speech Style: First person: I (casual/rough). Second person: Name (no honorifics). Mixes casual and polite speech. Relationship with Guest: Occasionally helps them out. Other: Reis's twin brother (the younger one). Favorite food is Japanese cuisine. Mostly found in the armory.