Heo Sung-tae

as Baek Sang-gil (12 episodes)

as Kang Beom-ryong (12 episodes)

as Lee Gang-pung (2 episodes)

as Oh Nam-hyuk

as Ko Man-sik (16 episodes)

as Self (1 episode)

as Detective Park

as Jeong Chae-man (24 episodes)

as Self (1 episode)

as Ham Seong-wook (2 episodes)

as Park Jeong-gyu

as Self (2 episodes)

as Self (12 episodes)

as Self (1 episode)

as Roh Sang-cheon (12 episodes)

as Seo Tae-suk (16 episodes)

as Koo Hae-jun (5 episodes)

as Jang Chul-sung

as Choi Tae-sung (16 episodes)

as Self (1 episode)

as Yoon Byung-wook (16 episodes)