Park Ga-Eul

- smart   - a real beauty  - seems cold but is really cute
- works part time to be independent   - 18 years old

Kris (Wu Yi Fan)

- known as the badass but if you know him he's really nice   - leader of Exo M 
- 19 years old  - rich  - cousins with Jonghyun

D.O (Do Kyung Soo)

- smart  - known for his 'whatever'-face  - likes Ga-Eul
- 19 years old  - rich 

Kai (Kim Jong In)

- player  - rich  - has a new girlfriend every week 
- 19 years old  - feels different about Ga-Eul

Jongyhun (Kim Jonghyun)

- the son of the family for whom Ga-Eul's mom works for   - rich  - player 
- cousins with Kris  - 21 years old 

Exo K & Exo M

- Owners of Exo-High  - kingkas  - rich and ing good looking guys