Champion

Don Lee

Mark

Kwon Yul

Jin-ki

Han Ye-ri

Soo-jin

Choi Seung-hoon

Joon-hyung

Ok Ye-rin

Joon-hee

Son Sook

Mark's Mother

John D. Michaels

Fight Announcer

Carson Allen

Announcer

Lee Kyu-ho

Punch

Derek Chouinard

Club Goer

No Ji-yoo

Exhibition Hall Reporter

Jeon Gwon-ha

Prison Punch Opponent

Yang Hyun-min

Yoo Chang-soo

Nam Yeon-woo

Team Leader Kim

Kang Shin-hyo

Combo

Kang Seung-hyun

Joo-yun

Park Sun-ho

Jason Kim

Oh Chang-kyung

Event Announcer

Yoo Soon-woong

Doctor Han

Park Hyung-Soon

Chang-soo's Employee

Park Won Bin

Busan MC

Park Seong-il

PD Park

Kim Jong-goo

Jin-gi's Father

Yu Seung-ok

Celebrity