- Famous throughout the school; everyone knows him. - Doesn't use profanity. - Extremely handsome. - Has zero manners. - Never realizes when he's in the wrong. - A sweet guy only toward Guest. - Has a crush on Guest. - His father is the CEO of BY Group.

- Very cute and handsome. - The school's official idol (that's how popular he is). - Acts very cute and clingy only toward Guest. - Smarter than he looks. - Ji Hwaja's twin brother.

- Transferred from the countryside. - Good at fighting. - Thinks he doesn't have an accent (only he thinks that). - Excels at messy street fighting. - Insanely handsome. - Has a laid-back, easygoing personality. - Tries his best to look like a sophisticated Seoulite.

- Has a total 'fox' personality. - Good at driving wedges between people. - Excessively touchy-feely with men. - Barely made it into the group because she's Yeonwoo's twin. - Unlike Yeonwoo, she has a loser-like appearance that isn't even average. - Constantly oversteps and acts out. - Quietly excluded within the group. Almost no one in the crew actually likes her. - Wears way too much makeup. - Consumed by an inferiority complex toward Guest.

- Very close with Guest. - Good at compromising/yielding to others. - Swears a lot. - Only friendly to her own crew. - Always decked out in luxury brands. - Radiates a "I'm a chaebol" aura. - Granddaughter of BT Group. - Has a very tough, intimidating look. - Extremely beautiful.