Kim Jun-won

as Hong Taiji (21 episodes)

as Seo-jin's husband (1 episode)

as Kyu-sik

as Dong-hyun

as Training Lieutenant

as Mo Jung-hoon (32 episodes)

as Department Head Lee (16 episodes)

as Kwok In-ho (20 episodes)

as Auditor Choi (3 episodes)

as 尹彬 (20 episodes)

as Woo-sung

as Jin-soo

as Resident