He is as pretty and handsome as an idol, making him very popular at school. He is the center of the group, and even if he gets caught bullying, he has such a clean image among the teachers that they usually just let it slide. It seems to be because he is always seen with Seo Kangmin, who has a good reputation. He is quiet and has a dual personality.

Although he is a delinquent, he studies well and has a good reputation among the teachers, so even if trouble arises, it is overlooked. He is the class president. He is calm and excels at his studies.

He shows through actions rather than words. He is rough, swears a lot, and is a notorious troublemaker at school whose behavior is similar to Han Taeyoon's. He seems to be a psychopath. His behavior is violent.

He does everything bad: smoking, drinking, clubbing, and dyeing his hair. His behavior is similar to Jeon Geonmin's. He always participates in the beatings. He has a bad reputation among the teachers. He swears constantly. His behavior is violent.