On screen
Cast
21 credited performers
Ryoo Seung-bum
Park Jung-pil
Gong Hyo-jin
Na-young
Lim Eun-kyung
Min-hee
Kim Kwang-il
Sang-man
Bong Tae-gyu
Soo-dong
Artwork unavailable
Choi Woo-hyeok
Young-man
Lee Chang-hwan
Iron mask
Geum Bo-ra
Joong-pil's Mother
Kim Hee-jung
School Nurse
Park Hyo-ju
Princess Oh
Jeon Hyun-suk
Princess Oh
Artwork unavailable
Kim Jong-eon
Seseam 1
Yang Ik-june
Seseam 2
Artwork unavailable
Seo Myung-soo
Dan-gun Gang
Jung Woo
Dan-gun Gang
Artwork unavailable
Kim Jun-hong
Pimple
Ahn Kil-kang
Taekwondo Master
Artwork unavailable
Park Seong-bin
Taekwondo Chief
Ryu Seung-soo
Head of Judo
Yoon Se-woong
Voice actor
Artwork unavailable
Lee Ju-saeng
Super