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]