Yoo Yeon-soo

as District officer Mr. Jo (uncredited)

as Detective Lee

as Chief Moon of National Police Agency

as P.E. Teacher

as Chief Han

as The Prefect of Police

as Mustache Detective

as Officer Seo

as Jin Ho-seong

as Dr. Oh

as Yoon Sung-soo

as Karaoke Manager

as Professor Kim

as Abusive Teacher

as Knife