톱스타 유백이

김지석

— Yoo Baek

전소민

— Oh Kang-Soon

이상엽

— Choi Ma-Dol

권혁

— Kim Joon

Lee Han-wi

— Ma-Dol's father

류승수

— Seo Il

이아현

— A Seo-Ra

Jung Eun-pyo

— Kim Kook-Seob

정이랑

— Lee Hyang-gi

김현

— Yang Bang Sil [Ma Dol's mother]

Kim-Min Seok

— Park Dong Chun [Yoo Baek's manager]