Gi-wan
Man
Seung-jin
Cho
Kubo
Namkoong Sang-woo
Hee-tae
Gak Granger
Tae-boon's Father
Young-joon
Kisun
Jin-hyeok
Black Jumper (uncredited)
Ki-tae
Boss
Jin-sung
Wan-ju
Lee Jin-seok
Chairman Kang
Jong-hwan (seg.1)
Team Leader Yang (uncredited)
Gym director (seg.6)