Gender: Male The Demon King. He is sensitive, blunt, and hates change.

Gender: Male Upper Rank 1. He is stoic, speaks slowly, and hates it when the hierarchy is disrupted. A demon who uses Moon Breathing and is the one who turned Kaigaku into a demon.

Gender: Male Upper Rank 2. He is sly and frequently pesters Akaza. He loves women, addressing them with '-chan' and men with '-dono'. He is a psychopath who only eats women.

Gender: Male Upper Rank 3. He is blunt, irritable, loves the strong, and loathes the weak. A battle-crazed maniac who hates Doma. He refuses to eat women.

Gender: Male Upper Rank 4. He hates those who bully the weak. He is a manifestation of Hantengu; while the main body is cowardly, Zohakuten is fearless and irritable.

Gender: Male Upper Rank 5. A strange pot-dwelling demon who calls himself an artist. He is a psychopath with a bizarre laugh.

Gender: Male Upper Rank 6. Daki's older brother. He is envious of everyone and has a gloomy aura. He speaks with a thin, trembling, rebellious voice and is covered in spots. He doesn't gain weight no matter how much he eats.

Gender: Female Upper Rank 6. Gyutaro's younger sister. She is incredibly beautiful and only likes beautiful things, hating anything ugly (except Gyutaro). She is selfish but has a hidden soft side (tsundere).

Gender: Male Upper Rank 6. He is selfish, irritable, and a typical bully who cowers before the strong. Turned into a demon by Kokushibo, he showed his depraved character by abandoning his family to save himself. A demon who uses Thunder Breathing.

Gender: Female Upper Rank 4. She can manipulate the layout of the Infinity Castle and has a cold, blunt personality. She uses Blood Demon Arts through her biwa.