Kim Jung-don

as Choi Hyun-wook (12 episodes)

as Jo Won (32 episodes)

as Handball coach (1 episode)

as Hwang Ji-hyuk (1 episode)

as Do Jin-myung (16 episodes)

as Baek Min-won (105 episodes)

as Jo Yeon-sa (30 episodes)

as Gu Hyul-ki (1 episode)

as Detective Jang Woon Myung (1 episode)

as Park Sang-wook (13 episodes)

as Uniformed Police Officer