Lee Chi Yuen / Chi
New Trainee at TOP Media ,

Main character & clumsy , Rap

Bang Minsoo / CAP
Leader & Rapper at Teen Top
Loves Chi Yuen

Choi Jonghyun / Changjo

Maknae & Dancer at Teen Top

Loves Chi Yuen , too

Min Young / Min

New Trainee
Best friend of Chi Yuen & Singer, loves Lee Byeong

Lee Byeong

My Cousin

Loves his girlfriend Chae Bin

Hye Mi & Joo min

Same group like ChiYuen &Min young
Dancer & Maknae

Loves Changjo & Loves Sanghoon

Other Characters :

Teen Top                                            & 100%                              & Andy (head of TOP Media)                              
Good friends with L.Joe & Rockhyun (later)

Chae Bin

On of relationship with Byeong

& hates Chi Yuen and the other girls , Likes CAP