D.O. a cool and sly teenager who always full of curiosity pull out many pranks to anyone he wants to, with his badass men Kai and Chanyeol. Aside from that Luhan a nerd boy, the mastermind of their prank events.  

Park Chorong: a new student from Busan. Still has her Busan dialect.

Goo Ha Ra: freaking hot stuff girl. Unbearable y.