as Sang-kil
as Lee Do-yeop
as Kim Sang-do
as Jang Pal-nyeo
as Oh Cheol-ju
as Kim Yeo-na
as Lee Joon-sang
as Doctor of Engineering
as Man in Taekwondo uniform
as Captain Ma (uncredited)
as Officer Gong (uncredited)
as Bureau Director (uncredited)
as Han Soon-kyung
as Park Joon-seo