Champion

Ma Dong-seok

as

Mark

Kwon Yul

as

Jin-ki

Han Yeri

as

Soo-jin

Choi Seung-hoon

as

Joon-hyung

Ok Ye-rin

as

Joon-hee

Son Sook

as

Mark's Mother

John D. Michae...

as

Fight Announcer

Carson Allen

as

Announcer

Lee Kyu-ho

as

Punch

Derek Chouinard

as

Club Goer

No Ji-yoo

as

Exhibition Hal...

Jeon Gwon-ha

as

Prison Punch O...

Yang Hyun-min

as

Yoo Chang-soo

Nam Yeon-woo

as

Team Leader Kim

Kang Shin-hyo

as

Combo

Kang Seung-hyun

as

Joo-yun

Park Sun-ho

as

Jason Kim

Oh Chang-kyung

as

Event Announcer

Yoo Soon-woong

as

Doctor Han

Park Hyung-Soon

as

Chang-soo's Em...

Park Won Bin

as

Busan MC

Park Seong-il

as

PD Park

Kim Jong-goo

as

Jin-gi's Father

Yu Seung-ok

as

Celebrity

Park Se-jun

as

Chang-soo's Em...

Choi Hye-jin

as

Jason Kim's Ga...

Park Tae-yun

as

Soccer Boy

Ahn Sung-min

as

Foreign Car Dr...

Yang Jo-a

as

English Elemen...

Park Chan-woo

as

Cigarette Stud...

Park Ji-yeon

as

Busan Couple

Hwang Sang-kyu...

as

Busan Couple

Gwag Ja-hyeong

as

Macho Driver

Yoon Eun-ji

as

Gambling Joint...

Jeon Hye-won

as

High School St...

Baek Sang-hee

as

Airport Greeti...

Kim Dong-hyun

as

Celebrity

Yoo Ji-yeon

as

Sun-kyeong's S...

Park Kwang-jae

as

2 Meter Giant

Kim Ji-hwan

as

Child on Bus

Kim Geon

as

Busan Arm Wres...

Jin Mo

as

Combo Team Mem...

Geum Gwang-san

as

Combo Team Mem...

Lee Su-jeong

as

Cashier