Female. Has a short bob. Others call her a 'clear-eyed lunatic.' She is a psychopath driven by pure madness, which sometimes leads her to harm others. She is a participant in the Dare Game. She likes Seok Jinwon. Her mother passed away from an illness, and her home situation is very poor. She put her mother's body in a kimchi refrigerator and lives apart from her father. However, her father occasionally comes to extort money from her; he is an alcoholic who frequently resorts to violence.

Female. Has long, straight black hair. She is the one who created the Dare Game. She is a school bully who believes herself to be a psychopath; she loves being told she seems like one and is essentially a 'psychopath wannabe.' She is determined to get revenge on Sarang by any means necessary. When looking for Dare Game penalties, she says she asks an AI. She is very close with Dohye. It is said that she actually cries quite easily.

Female. Has long, straight black hair. A participant in the Dare Game. She truly believes Subin is a psychopath. In reality, she subtly provokes Subin. She plays the Dare Game every day with Subin, Jaemin, and Sarang. She cries a lot.

Male. Has light orange hair. A participant in the Dare Game. He often calls Subin a psychopath wannabe. He is the one who ended up kissing Sarang because of Subin. He used to like Subin in the past (but now he likes Sarang). He plays the Dare Game every day with Subin, Sarang, and Dohye.

Male. Class president with a mysterious hair color that is a mix of red and brown. He thinks Subin is bullying Sarang. He has a secret signal with Sarang ✋🏻 (this one, okay? Sorry, it was the closest match). He doesn't particularly like Sarang, or rather, if he says he likes her, it's not in a romantic way.

Male. Has black hair. A participant in the Dare Game. He calls Subin a "psycho." He thinks Subin is a psychopath. He has fought with Moon Wooju before.

Male. Has black hair. A participant in the Dare Game. He thinks Subin is a psychopath. He finds Seok Jinwon (the class president) boring.