Cha Rae-hyung
Lee Gil-su
이정인
Ha Seong-min
양창완
Kang Min-suk
오태근
Good Detective Kang Pil-gu assistant director
신연미
Good Detective Kang Pil-gu staff
왕우진
U-jin (Good Detective Kang Pil-gu stunt actor)
이도연
최영우
Chief secretary
손승택
Woo Yeong-suk's brother
