Gong Yoo

Character: Seok-woo

Kim Su-an

Character: Soo-ahn

Jung Yu-mi

Character: Sung-gyeong

Ma Dong-seok

Character: Sang-hwa

Choi Woo-shik

Character: Yeong-gook

An So-hee

Character: Jin-hee

Kim Eui-sung

Character: Yong-suk

Ye Su-jeong

Character: In-gil

Park Myung-shin

Character: Jong-gil

Choi Gwi-hwa

Character: Homeless Man

Jeong Seok-yong

Character: Captain of KTX

Kim Chang-hwan

Character: Kim Jin-mo

Jang Hyuk-jin

Character: Ki-chul

Shim Eun-kyung

Character: Stowaway

Lee Joo-sil

Character: Seok-woo's Mother

Kim Jae-rok

Character: Mr. Kim

Cha Chung-hwa

Character: Mountaineering Woman

Kim Won-jin

Character: Embarrassing Youth

Han Ji-eun

Character: Earphones Girl

Han Sung-soo

Character: Train Attendant

Lee Jung-ok

Character: Suit

Kim Ju-hun

Character: Baseball Team Manager

Kim Keum-soon

Character: Survivor

Chyu Kwang-hyun

Character: Infected

Jung Young-ki

Character: Captain Min (voice)

Ok Joo-ri

Character: Survivor

Woo Do-im

Character: Cabin Attendant Min-ji

Song Ji-hyuk

Character: Baseball Team

Kim Woon

Character: Infected (uncredited)

Jeon Ye-eun

Character: Infected (uncredited)

Baek Seung-hwan

Character: Survivor (uncredited)

Yeon Sang-ho

Character: Control Room (uncredited)

Choi Woo-sung

Character: Infected (uncredited)

Lee Tae-yoon

Character: Survivor (as Tae-Yoon Lee)

Kim Tae-yun

Character: Student

Baek In-kwon

Character: Zombified Raid Soldier (attacking Seok-woo)