Ko Gun-han

as Yang Jung-kook

as Jang Eung-Soo (12 episodes)

as Hee-bum

as Kang Min-jun (2 episodes)

as Park Gyeong Hyeon [Ju Hyeong's client] (1 episode)

as Lee Kwang-hee (12 episodes)

as Lee Gwang-hui (1 episode)

as Senior (8 episodes)

as Kim Jo-dan (12 episodes)

as Speed

as James

as Jangsan tiger (1 episode)

as Alex (1 episode)

as Dong Woo (6 episodes)

as Yang Yong-chul (2 episodes)

as Jong-guk

as Victor (4 episodes)

as Yoo Gi Hyeon (2 episodes)

as Choi Yun-jae (5 episodes)

as Oh Dong-geun (24 episodes)

as Young-cheol

as Yeon Geun (32 episodes)

as Kim Sun-Woo (32 episodes)

as Jeon Young-Sik (16 episodes)

as Mountain God Park (16 episodes)