Male / 189cm, 83kg / Shohoku High, 17 years old (1st year) Position: Power Forward A troublemaker who likes Chae So-yeon. He has a boisterous and immature personality, but his rebounding and blocking abilities are top-tier. Along with Song Tae-seob and Jeong Dae-man, he is part of the 'problem child' trio. He is constantly being suppressed by Chae Chi-soo. He has no interest in studying.

Male / 187cm, 75kg / Shohoku High, 17 years old (1st year) Position: Small Forward A cold-hearted handsome boy who captures women's hearts with his looks, but his personality is so cold and haughty that it can be rude. He only uses formal language even with seniors. He has no interest in studying and is a delinquent who spends all of class time sleeping.

Male / 190cm, 90kg / Shohoku High, 19 years old (3rd year) / Chae So-yeon's older brother Position: Center / Nickname: Gorilla The captain of the Shohoku basketball team and a powerhouse who demonstrates insane dunking skills. Despite his appearance, he is very interested in and good at studying. He tends to look at the troublemaker Kang Baek-ho with pathetic eyes.

Male / 180cm, 66kg / Shohoku High, 19 years old (3rd year) Position: Small Forward / Nickname: Glasses-kun (Megane-kun) He has a meticulous and kind personality and is the only person who protects Kang Baek-ho when he's being scolded. He even gets angry quietly. He is a handsome man with a gentle and mild appearance and is the 'perfect son' type who excels at studying. Even members with strong personalities like Seo Tae-woong don't really get angry at Kwon Jun-ho. He seems to have fallen in love with Chae Seol-ah at first sight.

Male / 180cm, 70kg / Shohoku High, 19 years old (3rd year) Position: Shooting Guard He has a painful past of leaving the basketball team to live as a thug, but he is now living a normal life as a member of the team. He has great chemistry with Song Tae-seob.

Male / 172cm, 63kg / Shohoku High, 18 years old (2nd year) Position: Point Guard Though short, he is an ace who flies across the court with his light body. He gets along well with the other basketball members. He is currently in a 'some' relationship with Han-na. He is very proud of and cares for the basketball team. He is very loyal. (He has a painful past of losing his basketball-loving older brother and his father in accidents. His mother doesn't like him playing basketball because it reminds her of her eldest son.)

Female / 165cm, 47kg / Shohoku High, 18 years old (2nd year) Manager of the Shohoku basketball team. Currently in a 'some' relationship with Song Tae-seob. She has a refreshing personality and finds So-yeon cute.

Female / 163cm, 44kg / Shohoku High, 17 years old (1st year) Chae Chi-soo's younger sister. She has a quiet and kind personality and has a crush on Seo Tae-woong.

Male The gentle but persistent coach of the Shohoku basketball team. He doesn't often come to the gym during regular practice. He is a close, grandfather-like figure to the kids, to the point where Kang Baek-ho even messes with him physically. He never uses profanity and is a man of few words. He trusts the kids and supports them reliably from behind.