Lee Soo-yong

as Ryu Jeong-min (2 episodes)

as Hong Jae-man (7 episodes)

as Detective (1 episode)

as Man at the Entrance 2

as Male Lead

as Samujyan

as Sharp-Witted detective

as Tae-won's Crew Member 5

as 3rd Platoon Team 1

as Bandit 2

as 2-5 Class President