Sim Hee-seop

as Lee Jun-hwan (12 episodes)

as Sang-soo

as Dong-jun

as Chon Ho-yeong (1 episode), as Cheon Ho-yeong (1 episode)

as Boxer

as Former Team Manager

as Interceptor

as Kim Hyung-joong

as Father Kim

as Jun-ho

as Frog (voicee)

as Joo Ha-Min (16 episodes)

as Choi Won-Joon (40 episodes)

as Kim Jin-Young (10 episodes)

as Yeon-woo

as Prosecutor

as Kenji

as Private

as Medical Officer

as Madam's lover/ Choi Kyeong-seok's underling/ Police 4/ Lodging kid (voice)

as Sang-won