Cha Seo-won

as Koo Jun-mo (8 episodes)

as Choi Yi-joon (12 episodes)

as Im Soo-hyun (2 episodes)

as Yoon Tae-joon

as Yoon Tae-joon (10 episodes)

as Mr. Ryu

as Yoon Jae-min (151 episodes)

as Tae-joon

as [FC Hwantasystar] (42 episodes)

as Doctor

as Lee Wi Sang (40 episodes)

as Choi Yong Yi [Yeong Ha's neighbor] (100 episodes)

as Lee Dong-Hoon (32 episodes)

as Choi Dong-Joo (100 episodes)

as Da Yi Jae

as Self (1 episode)