Yoo Hai-jin
Gui-bo
Kim Min-jae
Sung-woong
Lee Sung-kyoung
Ga-young
Sung Dong-il
Sung-soo
Jin Kyung
Mi-ra
Na Moon-hee
Gui-bo's Mother
Hwang Woo-seul-hye
Do-na
Park Gyu-young
So-young
Lee Han-seo
Ji-young
Kim Tae-hun
Seung-hyuk
Hyun Bong-sik
Coach
Kim Kang-hyun
Koh Soo-hee
Choi Yu-hwa
Hye-jung
Lee Ji-ha
Myung Suk-geun
Lee Ye-won
Ga-young (young)
Kim Tae-yun
Gym member
Crew
Cho Yong-seok
VFX Supervisor
Yoon Choong-yeol
VFX Supervisor
Jang Min-jae
VFX Supervisor
Chang Ick-jea
VFX Supervisor
Kim Man-geun
Assistant Editor
Jung Jin-wook
Production Sound Mixer
Yang Hye-jin
Sound Editor
Ryu Jae-hwan
VFX Supervisor
Kim Dae-woong
Writer
Kim Dae-woong
Director
Kim Hak-hyun
Set Decoration
Bae Sun-hye
Line Producer
Lee An-na
Producer
Park Hyun-tae
Executive Producer
Cha Won-chun
Executive Producer
Dalpalan
Original Music Composer
Lee Hyung-deok
Director of Photography
Moon Se-kyoung
Editor
Gang Hye-yeong
Sound Designer
Lee Yo-han
Production Design
Lee Hyung-bin
Camera Operator
Kim Hyun-joo
Costume Designer
Park Cheong-woo
Lighting Director
Ha Mi-ra
Assistant Editor
Lee Geon-moon
Fight Choreographer
Yang Jin-sun
Costume Design
Lee Myeung-eun
Makeup & Hair
Ryu Yeon
Digital Intermediate Producer
Han Gyeong-hoon
Assistant Director