Park Mi-young
Ra Mi-ran
Cho Ji-hye
Lee Sung-kyoung
Youngest Detective
Cho Byeong-kyu
Chae Sook-hee
Lee Jung-min
Motel Staff
Ha Jung-woo
Hwang Bok-hyun
Sung Dong-il
Young Ji-hye
Lee Re
Big Man
Ahn Seong-bong
Police Chief
Baek Seung-hwan
Se-jin's Mother
So Hee-jung
Youth Division Detective
Kim Min-kyung
Soo-bin
Jo Hye-joo
Jo Ji-chul
Yoon Sang-hyun
JD the Tatooist
Jack Lyons
Arabian Subordinate
Anupam Tripathi
Club Staff
Choi Byung-yoon
High School Student
Im Ye-eun
Kang Sang-doo
Ahn Chang-hwan
Back Street Nostalgic Girl
Choi Hye-jin
Detective Kwak
Han Soo-hyun
Past Citation Moderator
Kim Han-sang
Girl Cop
Park Se-jin
Cyber Investigations Police
Lim Hyun-sung
Yang Jang-mi
Choi Soo-young
Seo-jin
Park So-eun
Carmelo
Chris Lyon
Truck Driver in Accident
Seo Suk-kyu
Happy Balloons Boss
Ahn Jae-hong
Chan-woong
Kim Jun
Seo-jin's Doctor
Seol Chang-hee
Criminal Affairs Division Civil Petitioner
Kim Tae-jun
Helium Balloon High Schooler
Bae Yoo-ram
New Pacific Suicide Female Victim
Ok Ja-yeon
Woman & Youth Division Detective
Chief Civil Service Officer
Yeom Hye-ran
Flirty Man at Club
Jeong Doo-won
Shinchon Sunglasses Man
Kim Gwang-seop
Kim Chul-hwan
Former Female Taskforce
Kim Ji-na
Happy Balloon University Student
Song Ji-hyuk
Guardhouse Conscripted Policeman
Lee Moon-bin
Arab Owner of Big-sized Clothes Store
Gambhir Man Shrestha
Woo-jun
Wi Ha-jun
Philip
Joo Woo-jae
Yong-seok
Kang Hong-suk
Chan-young
Kim Do-wan
Detective Oh
Jun Suk-ho
Executive Producer
Heo Min-heoi
Fight Choreographer
Heo Myeong-haeng
Stunts
Kwon Tae-ho
Special Effects Supervisor
Jeon Gun-ik
Production Sound Mixer
Hwang Jung-ho
Still Photographer
No Ju-han
Yoon Seong-min
Set Decoration
Lee Bong-woo
Yoo Mi-jin
Kang Moo-seong
Props
Eom Se-yong
Key Grip
Cho Gi-hun
Assistant Director
Kwon Ji-yoon
Digital Intermediate
Jeong Hye-ri
Lighting Artist
Kim Dong-hyo
Jeon Young-wook
Kang Gyeong-su
Visual Effects
Kim Jong-sung
Director
Dawon Jung
Producer
Ahn Seong-hyun
Writer
Byun Bong-hyun
Editor
Kim Hyung-ju
Original Music Composer
Lee Jae-hak
Production Design
Son Min-jeong
Sound Supervisor
Lee Seung-yeop
Director of Photography
Lee Sung-jae
Adaptation
Makeup & Hair
Park Min-hui
Min So-yeon
Costume Design
Shin Ji-young
Kim Young-rok
Original Story
Na Jun-o
Lee Jae-yun
Lighting Director
Lee Dong-hwa
Lim Myeong-gyun
Executive Producer's Assistant
Lee Seon-yeong
Production Assistant
Kim Su-jin
Sound Director
Lim Byeong-woo
Tae Wook