Lee Yoo-jun

as CEO Eom (8 episodes)

as Jin-cheol (voice)

as Cannon (6 episodes)

as Cheol-su

as Jung Man-ho (16 episodes)

as Chairman Yang Seok-chan (12 episodes)

as Brother

as Kim Han-ra (12 episodes)

as Seo Jeong-ho (12 episodes)

as Jeong Jae-yeong

as Han Jaeho (16 episodes)

as Sign Man

as Wang Min-ho (16 episodes)

as Club gang

as Mr. Hwang

as President Park

as Big Guy

as Jung Chi-in (16 episodes)

as Oh Gyeong-han (32 episodes)

as [sound engineer] (16 episodes)

as Jung Heon-gi (16 episodes)

as Bool-gom / Brown Bear (16 episodes)

as Sang-ha's Subordinate

as Gan-nan

as Ax