My Paparotti

Lee Je-hoon

Jang-ho

Han Suk-kyu

Sang-jin

Kang So-ra

Sook-hee

Lee Jae-yong

Gang Boss

Jin Kyung

Mi-sun

Bae Sung-woo

Sang-jin's Alumnus

Cho Jin-woong

Chang-soo

Kim Ji-seok

Drunken Man (cameo)

Lee Sang-hun

Teacher

Yoon Yeong-gyun

Delivery Man

Yang Han-yeol

Ji-min

Oh Dal-su

Principle Deok-saeng

Yoon Young-kyun

Delivery man

Lee Do-yeon

English teacher

Cha Jong-ho

Dog hair

Yoon Jin-ha

Big eye

Sung Yoo-bin

Jang-ho (young)

Son Young-soon

Jang-ho's grandmother

Oh Chang-kyung

Detectiver

Lee Yoo-jun

Ax

Park Jung-min

MC