마동석

Mark

권율

Jin-ki

한예리

Soo-jin

최승훈

Joon-hyung

Ok Ye-rin

Joon-hee

손숙

Mark's Mother

John D. Michaels

Fight Announcer

Carson Allen

Announcer

이규호

Punch

Derek Chouinard

Club Goer

No Ji-yoo

Exhibition Hall Reporter

전권하

Prison Punch Opponent

양현민

Yoo Chang-soo

남연우

Team Leader Kim

강신효

Combo

강승현

Joo-yun

Park Sun-ho

Jason Kim

오창경

Event Announcer

유순웅

Doctor Han

Park Hyung-Soon

Chang-soo's Employee