The Merciless

Sul Kyung-gu

as

Han Jae-ho

Yim Si-wan

as

Jo Hyun-su

Kim Hee-won

as

Byung-gab

Jeon Hye-jin

as

In-sook

Lee Kyung-young

as

Byung-chul

Moon Ji-yoon

as

Young-geun

Jang In-sub

as

Min-chul

Kim Ji-hoon

as

Jung-sik

Kim Sung-oh

as

Seung-pil

Jin Sun-kyu

as

Prison Chief S...

Heo Joon-ho

as

Kim Sung-han

Shin So-yul

as

Osean Trading ...

Kim Bo-mi

as

Osean Trading ...

Lee Ru-ahn

as

Osean Trading ...

Choi Byung-mo

as

Captain Choi

Andreas Fronk

as

Russian Mafia

Lee Si-hoon

as

Jae-ho's Subor...

Choi Jun-young

as

Yong-chan

Yoon Yeong-gyun

as

Jae-ho's Subor...

Lee Kyu-ho

as

Odd Pair Inmate

Jeon Gwon-ha

as

Captain Choi's...

Kim Ki-ho

as

Jung-sik's Sub...

Park Soo-young

as

Priest Jang

Nam Kee-ae

as

Hyun-soo's Mot...

Kim Ik-tae

as

Busan Police C...

Lee Ji-hoon

as

Public Prosecu...

Go Bong-goo

as

Ho-yul

Hong In

as

Bang-gae

Lee Dong-Young

as

Byung-chul's B...

Jason Scott Ne...

as

Vlad

Ju Ye-eun

as

Cafe Selfie Wo...

Lee Dong-yong

as

Cold Warehouse...

Ryoo Ki-san

as

VIP Room Gang ...

Ko Dong-hyoung

as

SWAT Team

Carson Allen

as

Russian Woman

Park Kwang-jae

as

2 Meters Large...

Kim Tae-jeong

as

Russian Club W...

Park Jun-hyuk

as

CRPT