Lee Sang-hong

as Lee Cheol-gyu (1 episode)

as Yelü Pennu (32 episodes)

as Do In-bum (12 episodes)

as Axe gang action leader

as Loan shark

as Seong-hyeon's Father (1 episode)

as Choi Goo-sung (2 episodes)

as Detective Kim

as Suit Man

as National Intelligence Service 1

as Action Head

as Killer Blade army

as Jae-yong

as Lim Joon-suk