Im Hyung-kook

as Oh Jae-seok

as Team Leader Song

as Transposer

as Captain

as Jeon Yong-Su (12 episodes)

as Gong Hyeong-jun (2 episodes)

as 경철

as Kwak Ku-mok

as Chen

as Dad

as Police Support Department (uncredited)

as Hwang-jung

as Jung-hyeok

as Kim Ik-joo

as Beom-goo

as Do-hyun's Father

as Tae-hoon

as Seong-hun

as Joon-gu

as Doctor

as Hyeong-gook

as Reporter

as Hong-sik