James Sullivan (10 episodes)
Song Hyeon-jun (4 episodes)
Entertainment Company Staff
Park Young-woo (16 episodes)
Gu Young-chun (5 episodes)
Kim Se-hyun (12 episodes)
Park Jung-Seok (2 episodes)
Kim Min-jae (32 episodes)
Kim Sang-Shik [Young] (16 episodes)
Kim Yeong-jun (2 episodes)
Hong-dae (16 episodes)
Teacher
Detective
Black Suit Man
Club DJ
Wang-geun