Room No. 7

Shin Ha-kyun

Doo-sik

Doh Kyung-soo

Tae-jung

Kim Dong-young

Han-wook

Kim Jong-soo

Real Estate Agent

Kim Jong-goo

Vice-principal

Park Soo-young

Superintendent

Jun Seok-ho

Detective Woo

Hwang Jeong-min

Doo-sik's Sister

Jung Hee-tae

Pawnshop Staff

Lee Seo-hwan

Drunk Man

Kim Do-yoon

Tattoo Man

Lee Jae-hyeok

Detective

Kim Seong-jong

Narcotics Squad Detective 2

Jung Seung-kil

Doo-sik's Brother-in-law

Woo Ji-hyun

Cafe manager

Kim Ji-young

Garosu-gil woman

Kim Tae-han

Garosu-gil man

Choi Mu-sung

Used car dealer