Yoo Seung-mok

as Cha Mu-jin (12 episodes)

as Baek Jung-tae (12 episodes)

as Lee Seong-min (2 episodes)

as Han Beom-su (6 episodes)

as MP Baek (12 episodes)

as Song Horim, Chief of Medical Clinic

as Director

as Bu Jae-jung (12 episodes)

as Geon-seok

as Jo Hae-pal (6 episodes)

as Kwak

as Min Yong-gun (12 episodes)

as Dr. Yoo In-won (8 episodes)

as Tae-sung (3 episodes)

as Vice Principal (14 episodes)

as Jo Rae-hyuk (8 episodes)

as Vice-minister Lee

as Ahn Gyu-hwan

as Bae Yeong-du (8 episodes)

as Ki Do-soo