Good Boy [Russian]

Park Bo-gum

Yoon Dong-ju

Kim So-hyun

Ji Han-Na

Oh Jung-se

Min Joo-Yeong

Sang-yi Lee

Kim Jong-hyeon

Heo Sung-tae

Ko Man-Sik

Tae Won-suk

Shin Jae-hong

Man-sik Jeong

O Jeong Gu

Hyun-chul Seo

Hwang Gyeong Cheol

Hyun-chul Seo

Hwang Gyeong Cheol - Chief of Police

Cheol-min Park

Kim Geum-nam

Seo Jung-yeon

Jung Mi Ja

Eung-soo Kim

Cho Pan Yeol

Lee Ji-hye

Jung Gyeong Mi

Joon Go

Leo

Joon Go

Russian Mafia

Seo Jae-hee

Jin Gyeong-sook

Lee Ho-jung

Drug Monster

June Yoon

Incidentals

Daniel Kim

Yoon Dong-Ju

Ren Hanami

Grocery Store Owner (Lee Soo-mi)