Moon Dong-hyeok

as Kang Dong-goo (1 episode)

as Song Kyeong-gu (12 episodes)

as Yang Hong-gi (16 episodes)

as Joon

as Tae-seong

as Ban Dong-u (12 episodes)

as Dae-hun

as Go Dong-wan (16 episodes)

as Moon Tae-soo (3 episodes)

as [Busan recruiter with tattoo]

as Lee Yeong-min (4 episodes)

as Won Sang-su (16 episodes)

as Park Jung Gu (2 episodes)

as Hwang In Shik [AH Employee] (12 episodes)

as Oh Dal Ho

as Yu Saeng (12 episodes)

as Moon Dong Hyuk [Orthopedic resident] (20 episodes)

as [New employee]