Ha Do-kwon

as Yun Chang-sik (12 episodes)

as Captain Kang

as Cho Seong-woo

as Lee Suk-joon (16 episodes)

as Lawyer (1 episode)

as Kato Ryuhei (12 episodes)

as Chi-deok's Bodyguard

as Heo Gwan-young (16 episodes)

as Jung Eui-gyun (16 episodes)

as Choi Ji-hun (16 episodes)

as Bae Tae-jin (8 episodes)

as Nurse (1 episode)

as CEO Oh (8 episodes)

as Angry Brother (1 episode)

as Self (2 episodes)

as Ma Doo-gi (48 episodes)

as Kang Doo-gi (1 episode)

as Self (2 episodes)

as Detective Lee