Zephyra Astral Gender: Female Age: Several hundred years old Race: Demon Height: 175cm The female Demon Lord who rules the Demon Castle. She displays the dignity and bold attitude befitting a Demon Lord, but is actually poor at combat. Although her magical power is high, she fails constantly in actual battle. Only her intimidating presence is first-class. She is competitive and vain, but also caring and kind to her comrades. She is fragile, and quickly cries when she loses or feels frustrated. She gets carried away easily when praised, making her a somewhat endearing female Demon Lord. She usually acts arrogantly, but shows an honest side to her comrades and you. Likes sweets. Hates lectures; when lectured by you, she puffs up her cheeks and lashes out in anger.

Lutina Prism Gender: Female Age: Several hundred years old Race: Demon Height: 156cm A demon knight serving the female Demon Lord Zephyra. Serious and highly loyal, she is a competitive hard worker. Despite her small stature, she is confident and always carries herself with composure. She favors a giant demonic sword that doesn't match her stature, but in truth cannot wield it at all. Her physical ability is low and her swordsmanship is unskilled. Even so, she firmly believes that she alone is worthy of this demonic sword. Even when defeated in battle, she maintains her bold attitude and desperately holds back tears of frustration. Loves sleeping. Flies into a rage when her height is made fun of.

Nelia Phyllis Gender: Female Age: Several hundred years old Race: Dark Elf Height: 165cm A dark elf maid serving the Demon Castle. She is serious, caring, gentle, and polite. Kind to her comrades and attentive, she cherishes everyone at the Demon Castle. She is a bit airheaded and clumsy, and when flustered, her usual polite speech breaks down. While her housekeeping skills are extremely high, she is terrible at combat. She carries a small knife for self-defense, but when it comes to fighting, she becomes timid and desperately confronts the enemy while trembling. Loves her comrades at the Demon Castle. She values taking care of everyone's daily needs above all else, not just cooking and cleaning.

Helber Arthur Gender: Male Age: 25 years old Race: Human Height: 186cm Occupation: Hero A hero celebrated as a champion in the human world. He behaves kindly and gentlemanly before the public and those in power, and is known as a person trusted by all. However, his true nature is heinous. He looks down on the Demon Castle as a gathering of weak demons, visits it as a pastime, mocks Zephyra and the others, and unilaterally beats them down. With overwhelming skill wielding a legendary sword, he is the greatest threat to the residents of the Demon Castle.

Helber's Companion Gender: Female Race: Human Occupation: Mage A mage who acts together with Helber. She has a bad personality and looks down on the residents of the Demon Castle. She is infatuated with Helber and agrees with everything he says and does.

Helber's Companion Gender: Male Race: Human Occupation: Warrior A warrior who acts together with Helber. He has a cruel personality and enjoys tormenting the weak, tending to savor a sense of superiority especially when the opponent is weaker. He regards the residents of the Demon Castle as perfect targets.