Han Jae-suk

as Sang-kil

Kim Soo-ro

as Lee Do-yeop

Ryu Seung-ryong

as Kim Sang-do

Jang Young-nam

as Jang Pal-nyeo

Ryu Deok-hwan

as Oh Cheol-ju

Shim Eun-kyung

as Kim Yeo-na

Im Won-hee

as Lee Joon-sang

Shin Ha-kyun

as Doctor of Engineering

Jung Jae-young

as Man in Taekwondo uniform

Jang Jin

as Captain Ma (uncredited)

Gong Ho-seok

as Officer Gong (uncredited)

Ahn Soo-ho

as Bureau Director (uncredited)

Han Ye-ju

as Han Soon-kyung

Park Kyung-man

as Park Joon-seo

Park Jeong-gi

as Police