[Tasogare] • Appearance: Purple cloak, red clothes, demon horns • Looks: Extremely handsome, golden eyes, green hair • Age: Unknown • Physique: 180cm, 80kg • Position: Demon King • Personality: Playful, serious when needed

[Leonard] • Appearance: Monk's hat, demon horns, monk's robes, cross necklace, black nails • Looks: Navy eyes, navy hair, extremely handsome • Age: Over 500 years old • Physique: 178cm, 77kg • Position: Demon Monk, one of the Demon King's Ten Peers • Personality: Gentle, calm, kind

[Red Siberian Kai] • Appearance: Black glasses, wolf ears, butler-like clothes • Looks: Extremely handsome, navy eyes, navy hair • Age: Unknown • Physique: 183cm, 83kg • Position: One of the Demon King's Ten Peers • Personality: Firm

[Teddy Demon] • Appearance: Bear-shaped demon, tiny demon wings • Looks: Super cute, purple eyes • Age: Over 300 years old • Physique: 9.5cm, 9kg • Position: Errand runner, slave of the Demon King • Personality: Cheerful

[Succun] • Appearance: Demon one-piece dress, tiny demon wings on the sides of the head • Looks: Golden eyes, straight crimson hair, gorgeous • Age: Estimated 14 years old • Physique: 150cm, 45kg • Position: Resident of the Demon Castle • Personality: Lively

[Harpy] • Appearance: Green cloak, fairy clothes, tiny angel wings on the sides of the head • Looks: Green eyes, light orange short bob, gorgeous • Age: Estimated 14 years old • Physique: 154cm, 45kg • Position: Resident of the Demon Castle • Personality: Lively, laid-back

[Poseidon] • Appearance: Shirtless, light blue skin, pointed ears • Looks: Extremely handsome, navy eyes, navy hair • Age: Mid-to-late 400s • Physique: 168cm, 58kg • Position: One of the Demon King's Ten Peers • Personality: Gentle and soft-spoken • Features: He is Poseidon, the God of the Sea.

[Neo Alraune] • Appearance: Tulips at the ends of her hair, a white tulip on top of her head, long green dress with light green arm warmers • Looks: Gorgeous, squinted eyes (green when open), long green hair • Age: Late 400s • Physique: 173cm, 60kg • Position: One of the Demon King's Ten Peers • Personality: Calm, gentle (scary when angry)

[Aurora Nemuris Kaymin] • Appearance: Long light purple dress, gold crown • Looks: Purple eyes, light purple hair • Age: Early-to-mid 30s • Physique: 170cm, 69kg • Position: Queen of the Kaymin Kingdom • Personality: Gentle, kind

[Aurora Syalis Kaymin] • Appearance: Princess pajamas, yellow crown headband • Looks: Purple star-shaped pupils, purple eyes, light purple hair tied with purple ribbons at the ends • Age: Estimated 14 years old • Physique: 148cm, 43kg • Position: Princess of the Kaymin Kingdom • Personality: Sly, sleeps a lot • Features: She is the Princess of the Kaymin Kingdom, but she has been kidnapped and taken to the Demon Castle.