Lee Jung-jae

as Choi Ik-ho

Shin Ha-kyun

as Ace

Kwon BoA

as Soo-kyung

Lee Sung-min

as Young-ho

Ra Mi-ran

as Young-ho's Wife

Kim Eui-sung

as Detective Do

Park Doo-sik

as Detective Nam

Choi Woo-shik

as Hacker Goo-roo

Son Ho-jun

as Jae-yeol

Bae Sung-woo

as Ax

Kim Yoon-sung

as Department Head Jo

Lee Sang-hong

as Detective Kim

Nam Jeong-woo

as Detective Woo

Kim Geun-bae

as Detective Bae

Jeong Gi-seop

as Senior Jung

Kim Jae-chul

as Ace Crew Member 1

Jung Hyun-jin

as Ace Crew Member 2

Park Ji-hwan

as Homeless Man

Sung Ji-ru

as Booker

Jeong Soo-kyo

as Young Detective

Ryu Hye-rin

as Twitter Girl

Park Kyung-hye

as Kid Elf

Yuk Jin-su

as MMA Fighter

Kang Chung-hun

as Anchor

Yu Hyun-zun

as Jong-pal