Do Yu

as Secretary

as Hyeon Dong-joo(1 ep)

as Ji-tae(4 eps)

as Bartender

as Kim Jae-won(12 eps)

as Jae Sung [Motorcyclist subordinate](1 ep)

as Jo Kang-woo(8 eps)

as Nam Sang-won(12 eps)

as Park Jong Cheol(8 eps)

as Detective Hyuk Jin(1 ep)