Jang Dong-gun as Jun-shik

Joe Odagiri as Tatsuo Hasegawa

Fan Bingbing as Shirai

Kim In-kwon as Jong-dae

Lee Yeon-hee as Eun-soo

Kim Hie-won as Choon-bok

Oh Tae-kyung as Kwang-choon

Kwak Jung-wook as Min-woo

Kim Si-hoo as Tsukamoto

Cheon Ho-jin as Jun-shik's Father

Taro Yamamoto as Noda

Manabu Hamada as Mukai

Shingo Tsurumi as Takakura

Isao Natsuyagi as Tatsuo's Grandfather

Shiro Sano as Tatsuo's Father

Kumi Nakamura as Tatsuo's Mother

Kim In-woo as Yamada

Do Ji-han as Teenage Jun-shik

Yūkichi Kobayashi as Teenage Tatsuo

Go Ju-yeon as Teenage Eun-soo

Kim Soo-ro as Mike Nam

Jo Min-ah as Young Eun-soo

Hakuryu as Governor of Athletic Federation

Nicole Jung as Press Interview Assistant

Lee Dong-jin as Suicide Commando