Lee Jung-hyun as Soo-nam

Lee Hae-yeong as Gyu-jung

Seo Young-hwa as Kyung-sook

Dong Bang-woo as Do-chul

Lee Jun-hyeok as Hyeong-seok

Bae Je-gi as Detective Jo

Lee Dae-yeon as Subsection Chief

Park Eun-young as Hee-jeong

Ji Dae-han as Detective Park

Jung Young-ki as Young Doctor

Jung Hye-ji as Yeong-mi

Seo Joon-seo as Yeong-mi's Son

Jeong Ae-hwa as Supermarket Owner

Jeong Gye-soon as Hyeong-seok's Mother

Kim Choo-wol as Female Chief

Park Gwan-sik as Otolaryngologist

Sin Seong-sik as Homeroom Teacher

Choi Seong-hyeon as Fat Kid

Kim Mi-hee as Apartment Advertisement Woman

Cha Won-gyoo as Apartment Advertisement Man

Kim Jung-hyuk as Bank Employee / Factory Worker

Yoon Jae-joong as Newspaper Depot Boss

Hwang Yeong-soo as Factory Finger Worker

Bang In-hye as Senior Citizens' Community Center Crying Woman

Kim Geun-hyo as High School Girl

Kim Jeong-eun as High School Girl

Park Byeol-nim as High School Girl

An So-yeong as High School Girl

Lim Yong-soon as Classroom Teacher

Park Tae-wan as Classroom Teacher

Sin Kyeong-seop as Hospital Patient

Yong Seok-hwan as Business Card Thrower

Ryoo Han-gon as Protesting Resident

Mok Ji-sook as Protesting Resident

Song Jeong-ho as Protesting Resident

Sin Jae-ok as Protesting Resident

Lee Sang-kyeong as Protesting Resident

Lee Jin-hyeong as Protesting Resident

Jeong Ok-soon as Protesting Resident

Jeong Kyeong-ran as Protesting Resident

Jo So-ja as Protesting Resident

Im Jeong-sool as Supermarket Employee

Jeon Hong-seok as Supermarket Employee

Choi Kyeong-ok as Supermarket Employee

Kang Sin-goo as Factory Worker

Kim Nam-ryoon as Factory Worker

Kim Hyeon-chang as Factory Worker

Park Won-woo as Factory Worker

Seo Je-il as Factory Worker

Yoon Hee-kyeong as Factory Worker

Lee Do-goon as Factory Worker

Oh Kwang-rok as Neurosurgeon

Lee Yong-nyeo as Psychology Consultation Woman

Son Bum-soo as Commentator on Puffer Fish's Poison (voice)