Heo Dong-won

as Hwang Cheol-gwang

as Lee Sang-mok

as Kim Young-su

as Wolwolse Man

as Kwang-seok

as Chang-su

as Coach Yeon

as Detective Choi Jong-hun

as Teacher Chu

as Han Hee-sang

as Shin Il-su

as Yang Jun ['Skin Nation' chairman]

as Oh Dong-gyun

as Dodari

as Staff

as Sang-hoon

as ○ Mask

as Player 028

as Kim Tae-jin

as Heo Je-hun

as Aquarium manager

as Detective Shim

as Sauna Manager

as Jerome

as Myung-deuk

as Park

as Kim Nak-ho

as Choi Moon-sik

as Jin-gyu

as Seung-soo

as Jung Dong Ho

as Detective

as Oh Dong-gyun

as Yoo-soo (유수)

as Jeong-ho

as Youth Association Member

as Deputy Goo

as Yi-joon's Father

as Jung Dong-Ho