Cast from King of Prison

Lee Seol-gu

Beom-teol

Kang In-sung

Death-row criminal

Lee Hyun-woong

Wal-wal

Cho Myeong-yeon

Beol-goo

Yoo Sang-jae

Jeong Tae-soo

Lee Si-hoo

Newcomer

Min Kim

KTX