Kim Sung-gon Yi-po Detective 1
Kim Sang-hyun Translation App (voice)
Jung Hoon-hee Theme Song Performance
Kim Seung-ok Lyricist
Yoon Sung-won Chief of Police
Hwang Jae-won Jang Ha-ju
Cho Gi-hun Key Grip
Han Seo-wool Witness Couple
Park Eun-ji Line Producer
Shin Sang-yeul Gaffer
Cha Sang-do Soft-shelled Turtle Thief 1, Stunts
Han Hyeon-jik Ji-hyeok
Moon Soon-ju Yi-po Detective 2
Hwang Jin-ha Line Producer
Park Gab-jin Stunts
Lee Bong-jo Main Title Theme Composer
Jung Hyuk Police Officer
Shon Gwan-ho Gye Bong-seok
Kevin Houben Conductor
Kim Do-dam Witness Couple
Kim Gwi-rye Cheol-seong's Mother
Kim Gook-jin Translation App (voice)
Song Chang-sik Theme Song Performance