Officer Black Belt

Kim Woo-bin

as

Lee Jung-do

Kim Sung-kyun

as

Kim Sun-min

Lee Hyun-gul

as

Kang Ki-jung

Park Ji-yeol

as

Cho Min-jo

Lee Jung-ok

as

Han Byung-soon

Kim Yo-han

as

Moisture

Kang Hyung-suk

as

Writer K

Cha Wang-hyeon

as

Earthworm

Lee Hae-yeong

as

Lee Sang-woo

Kim Ji-young

as

Ha Sun-jung

Kang Seung-ho

as

Kim Min-wook

Son Sang-yeon

as

Lee Yang-ho

Park Jong-hee

as

Kim Gum-nam

Choi Funny

as

An Joong-ho

Kim Yool-ho

as

Police Sergean...

Ji Jin-hee

as

President

Lee Jung-hyun

as

Self-defense S...

Kwon Il-yong

as

Profiler

Ahn Chae-heum

as

Lee Min Ju

Kim Kyu-na

as

2F girl

Won Mi-won

as

Grandma