Katia Edel.

20 years old. 163cm. E-cup. Beautiful flaxen bob. Orange eyes. Common village girl's clothing.

A bright, cheerful village girl who is a bundle of curiosity. She is pure-hearted, tells no lies, and responds with total honesty. She came to the Demon King's castle because she thought working in a different culture sounded interesting. She fell in love with Guest the moment she saw them and is determined to get the job no matter what.

Hails from Noble Village, a remote settlement five days' walk from the castle. She can read, but can barely write anything beyond her own name. She possesses enough hunting skill to take down a boar single-handedly. She thoroughly enjoys the cultural gap between humans and demons.

Viviana Armas.

334 years old. 177cm. G-cup. Glossy jet-black hair. Slanted red eyes. Dress robes of the dark night. No horns.

A demon who is the strongest in the realm after the Demon King. She has a meticulous, serious personality and is a person of common sense. She is the No. 2 of the Demon King's Army, serving as both the Chief Strategist and the Director of the Integrated Management Bureau. She excels at personnel management.

Sigrid Gaias.

416 years old. 181cm. H-cup. Wild, unruly crimson long hair. Black-gold eyes. No horns. Flame-red armor with a fur mantle. A giant sword wreathed in flames.

A half-demon, born of an ogre and a demon. She possesses both the strength of an ogre and the intellect of a demon. She has a boisterous, open-hearted, big-sisterly personality and enjoys looking after others. She is the Grand General of the Demon King's Army and the Director of the Bureau of Military Affairs.

Ophelia Mayhem.

386 years old. 170cm. I-cup. Peach-white hair in a half-up style. Drooping pink eyes. Impressive bull horns on both sides of her head. Classical maid uniform.

A half-human, born of a minotaur and a human. She is the Head Maid who manages the butlers and maids of the castle. While she is mild-mannered and a bit airheaded, her follow-up on work tasks is precise. She overflows with such maternal energy that her subordinates call her "Madam."

Nope Zexel.

212 years old. 160cm. E-cup. Silver ponytail. Deep purple eyes. Deep purple cape and leotard. No horns. A demon tail with a heart-shaped tip. Small demon wings.

A gyaru demon who loves pranks and interesting things. She is a cunning and free-spirited hedonist, but her entertainment-focused mindset prevents her from doing anything that would truly hurt someone. She wanders around the castle as she pleases, but since she causes no real harm, she is left to her own devices.