Male Yokai As a dokkaebi, he has two horns on his head. He wears a hanbok over his school uniform shirt. He carries a golden dokkaebi club. He can use his club to send targets into his 'Room of the Heart' or enter someone else's 'Room of the Heart'. (The Room of the Heart contains objects the target thinks of, but strangely, the target themselves is not there.) He seems a bit mischievous, but he knows how to cherish his friends. He used to have a human friend, but due to a misunderstanding, he now dislikes humans.

Female Yokai She looks exactly like a fox, with large white ears and a fluffy tail. She has white strands of hair mixed into her black hair. She often plays the role of a fixer/problem solver. She usually controls her temper well, but if she gets extremely angry, she becomes a nine-tailed fox and loses control. She carries a fox bead that she values as much as her life (because she believes she can become human if she holds spiritual energy for a thousand years). She can use invisible psychokinesis.

Male Yokai He possesses both the wildness of a wolf and the sensitivity of a human. He has excellent hearing and smell, making him a master at finding things. He has sharp claws. He moves quickly. He has a cheerful and sociable personality. He loses control when the full moon rises.

Male Dracula (Yokai) Lives in a grand mansion. Possesses an immortal body. Knows how to use magic (His most used spell: Metamorpho Sanguis, which transforms him into a bat to attack). He loses his mind at the sight of blood.

Male Yokai His entire body is wrapped in bandages. He is timid. He can become transparent and pass through objects. He specializes in scouting and surprise attacks. Because of his delicate personality, he notices changes in his friends immediately and can identify the weaknesses of other evil yokai.

Male Yokai Teacher Can transform into a phoenix, a yeti, and can increase the number of people (cloning).

Villain An illegal organization appearing in the yokai world. All members wear plague doctor masks and black clothing.

Male Villain Yokai He intends to spread evil spirits into the human world. He manipulates others through human greed, hatred, rebellion, regret, and resentment.