문성근

Ga Seong-ho

Professor Seong

Byeong-hak

Won Chang-ho

Self

Yoo Han-il

Min Yong-jun

Do Won Bong [Seongju Prison inmate]

Self

Self

Self

Dr. Myung

Kyung Pil

Hwang In-bum

Kang Ki-chun

Narrator

Hong Sun-jo

Self

Congressman Cha Jong-hyeon

Kim Tae-Sang

Lawyer

Jang Se-dong

Jin-seok's Father / Mr. Park

Koo Tae-Won

Self

Yun Young-hwan

Sangwon

Jung Ji-yong

Lee Eui-myeong

Self

Wan-ho

Chief Nam Kyeong-dae

CEO Jeon

President Yoon

Moonsoo

Shin Jae-yeol

Professor Song

Mr. Moon

Jeon Sang-ok

Doctor

Vice Principal (Relay)

Pan-gon

King Daemusin

Gu Yang-Won

Hwan

CEO Jeong (voice)

Kwon Yong-hwan

Oh Sung-ho

Han Yun-sik

Self

Young-soo

Choo Hyung-Do

Bae Tae-gon

Mr. Jang

Young-soo

Kim Kyoo-hwan

Me

Joo-dong

Moon Dok-bae / Moon Chae-ku

Young-sub

Narrator (voice)

Self

Choi Hyeon-jun

R

Young-cheol

Kim Ki-young