Friend

Yu Oh-seong

Joon-seok

Jang Dong-gun

Dong-soo

Seo Tae-hwa

Sang-taek

Jung Woon-taek

Jeong-ho

Kim Bo-kyung

Jin-sook

Ki Joo-bong

Mustache

Joo Hyun

Joon-seok's Father

Jeon Young-woon

Dong-soo's Father

Lee Jae-yong

Scar-Eye

Kim Hyun-ji

Tall Woman

Yoo Seung-il

Child Joon-seok

Jeong Hee-ryong

Child Dong-soo

Kim Joon-beom

Child Sang-taek

Kim Seong-bok

Child Joong-ho

Kang Shin-il

Sang-taek's Father

Kwon Nam-hee

Sang-taek's Mother

Park Nam-hee

Joon-seok's Mother

Lee Eun-joo

Sin-ae

Kim Jung-tae

Doruko

Yoo Byeong-seok

Small Guy

Kim Gi-yong

Jjang-ga

Jung Ho-bin

Eun-gi

Kim Kwang-kyu

Math Teacher

Kim Gi-ho

Cowardly Gangster

Hong Seok-yeon

Security Guard

Ahn Chang-gook

Man with Gold-framed Glasses

Jo Yong-won

Beauty

Kim Hoon

Doruko's Henchman

Jo Soo-jin

Member of Rainbow

Lee Se-na

Member of Rainbow

Kim Hyun-sook

Member of 7 Princess

Jang Gi-hoon

Small Guy's Mob

Kim Yeong-heon

Joon-seok's Driver

Seo Byeong-do

Vice President

Kim Jun-hee

Trans

Park Hyo-jin

Theater Advertisement

Park Yong-chan

Buckle Student

Im Ji-moon

Triangle Student

Kim Tae-won

Gangster from the Trunk

Kim Seong-hwa

Arresting Policeman

Bae Won-yeong

MC Student

Lee Dong-wook

Student from the Shaolin Temple

Kim Po

Mustache's Henchman

Ji Dae-han

Scar-Eye's Shadow

Cha Jin-ho

Bunting Student

Kim Ji-hoon

Weekly Duty Student

Kim Moon-bin

Student

Kim Jung-woon

Doruko's Younger Brother

Kim Yun-tae

Dong-soo's Henchman

Chang Yun

Dong-soo's Henchman

Moon Woon-bong

Dong-soo's Henchman

Son Byung-hee

Dong-soo's Henchman

Yang Ji-woong

Waiter

Lee Kyeong-ha

Bar Girl

Hwang Joo-hyeon

Bar Customer

Choi So-i

Female Employee

Lee Ji-yeon

Female Employee at Wedding Hall

Sun Ho-jin

Young Man with Umbrella

Kim Jae-hyeon

High School Boy

Oh Seung-chan

Court Prosecutor

Jeong Jong-seop

Court Lawyer

Park Chan-young

Judge

Kim Sung-nyeo

Bus Conductor

Jo Joon-baek

Employee at Construction Site

Cho Yong-won

Beauty