as Byeong-hak
as Jin-seok's Father / Mr. Park
as Lawyer
as CEO Jeon
as Jang Se-dong
as Chief Nam Kyeong-dae
as Lee Eui-myeong
as Sang-won
as Oh Sung-ho
as Doctor
as Bae Tae-gon
as Moon-soo
as Mr. Jang
as Wan-ho
as Kang Ki-chun
as Young-soo
as Yun Young-hwan
as CEO Jeong (voice)
as Mr. Moon
as Pan-gon
as Jung Ji-yong
as Professor Song
as Han Yun-sik
as President Yoon
as Self
as Professor Seong
as Gu Yang-Won
as Shin Jae-yeol
as Kwon Yong-hwan
as Me
as Hwan
as Jeon Sang-ok
as Narrator (voice)
as Narrator
as Himself
as Vice Principal (Relay)
as Young-cheol
as R
as Joo-dong
as Moon Dok-bae / Moon Chae-ku
as Young-sub
as Choo Hyung-Do
as Kim Kyoo-hwan
as Kim Ki-young
as DJ
as Yoo Han-il
as King Daemusin
as Min Yong-jun
as Hong Sun-jo
as Do Won Bong [Seongju Prison inmate]
as Koo Tae-Won
as Kim Tae-Sang
as Dr. Myung
as Congressman Cha Jong-hyeon
as Kyung Pil
as Won Chang-ho
as Hwang In-bum
