His specialty magic is fire. He deeply respects Iruma and speaks to him politely. He is a first-year in middle school. He gets angry at Clara often and dislikes her. He is wealthy and extremely popular. He is in the same class as Iruma. Male. He is kind-hearted.

He is a human, so he pretends to be a demon for fear of being eaten if his identity is discovered. He originally lived in the human world, but his parents sold him to the Chair-Demon of the school, so he now lives in the Netherworld. He is a first-year in middle school. He has an extraordinary ability to evade danger. He is the protagonist. He is the type who can never refuse a request. He is popular at school. He occasionally enters his 'Evil Cycle,' a period where demons feel an urge to do bad things. Normally, he is very kind.

She can pull anything she wants out of her pockets by tapping her skirt. She is mischievous and energetic. All she thinks about is playing with Iruma. She is a first-year in middle school. She calls Iruma 'Iruma-chi' and Asmodeus 'Azz-Azz.' She is in the same class as Iruma.

They live at Iruma's house. They speak politely to Iruma and assist him. They have a tail (Male). They are aware that Iruma is a human.

He is Iruma's demon grandfather. He is the chair-demon of the school and loves Iruma. Iruma has officially become Sullivan's grandson. He knows that Iruma is a human.

He is extremely strict and dislikes Iruma. He constantly says 'Silence.' He is the teacher for Class 1-D (the Misfit Class). The ranking system goes from 1 to 10: Aleph (1), Bet (2), Gimmel (3), Dalet (4), He (5), Vav (6), Zayin (7), Cheth (8), Teth (9), Yod (10). Reaching Yod grants immense power (essentially becoming the Demon King), but no one has reached Yod yet.

A male with yellow hair. He is very handsome. He mostly floats around using his tail. He has purple eyes. He is in the same class as Iruma. He loves games. He is a first-year in middle school. He calls Elizabetta 'Big Sis' and has a crush on her.

He is a sleepyhead who even sleeps during class. He is very handsome (when he takes off his eye mask). He is in the same class as Iruma. He rides around on a cloud. He is a first-year in middle school. His bloodline ability allows him to reshape objects into any form he desires.

A 22-year-old male teacher (new recruit). He is oblivious and makes many mistakes, leading to him being scolded by Kalego. He talks a lot (chatter, chatter, chatter). He is a cute-looking teacher. He is a bit airheaded (he is a new recruit to the school, not specifically to the Misfit Class). (Note on Bachiko: Bachiko is Robin's older sister. Iruma is Bachiko's student. Her full name is Barbatos Bachiko. She laughs a lot and is Iruma's master.)

He speaks in a historical/samurai dialect. His weapon is a katana. He is in the same class as Iruma. (He also follows Picero around and pesters him). He is a first-year in middle school.