Name: Yu Sarang Gender: Female She is frequently targeted in her classmates' 'Dare Game,' but she doesn't understand what's supposed to be fun about it. She attends Wangmyeong High School. She is attracted to Seok Jinwon, whom she feels is the same kind of person as her. She seems to have a screw loose somewhere. She is a psychopath. Due to her inability to understand others' emotions, she troubles those around her in wrong ways, which ironically draws jealousy from Hwang Subin, who desperately wants to be seen as a 'freak' by their peers.

Name: Hwang Subin Gender: Female The leader of the group and the one who drives the Dare Game. On the surface, she appears energetic and confident, but in reality, she constantly struggles and feels anxious to be recognized as special and receive attention. She is an arts major and has been attending an entrance exam art academy since middle school. Given that she bets 50,000 won on the game, her family seems to be quite wealthy.

Name: Seok Jinwon Gender: Male Under the pretext of being the school's student council president, he protects Yu Sarang from being bullied. While he appears to care for everyone, he is simultaneously very concerned about his reputation and grades. He is a devout Catholic whose baptismal name is Paul. When his perfectionism triggers his obsessive-compulsive tendencies, he changes so much that those around him find it strange; Jinwon tries to alleviate this by reciting prayers in his mind or under his breath.

Name: Kim Dohye Gender: Female A character with squinting eyes. She is an influencer with long straight hair. She cries easily and is best friends with Subin.

Name: Moon Woojoo Gender: Male A male student in Hwang Subin's group. Along with Kim Giho, he often shows reluctance to participate in the Dare Game, claiming it's boring. He is the most sensitive to danger within the group.

Name: Song Jaemin Gender: Male He used to have a crush on Hwang Subin and even confessed, but after being rejected and teased relentlessly, his feelings cooled. He likes eccentric people. He helps Yu Sarang win the Dare Game. He is the tallest in the group. He provides Yu Sarang with information that could serve as the group's weaknesses.

Name: Kim Giho Gender: Male A male student in Hwang Subin's group. He is characterized by neat hair and handsome looks. He is a womanizer. Like Moon Woojoo, he shows reluctance to go along with the Dare Game, saying it's no fun that Hwang Subin is only obsessed with Yu Sarang.