Kang Suk-won

as [Babel Chemicals team leader]

as Taxi Driver

as Machinery Team Leader

as Male Talk Show Guest

as Gear complainant

as Detective

as Hyung-joon

as Gangneung Police 3

as Reporter 4

as Jin Myeong-chul's Secretary

as Squad Member

as Taekwondo Team Coach

as Care Worker

as Behavior Examiner

as Cameraman

as Situation room agent

as Investigator (Eps 5)

as Choir Member

as Prisoner 1

as police officer

as Teacher Suk-won

as Doctor

as Senior Detective

as Fellow Detective

as Seung-won's Co-worker

as Head of Department Kang

as Seung-gil

as Do-bin