Back story.

//STOP RIGHT NOW AND LEAVE THIS IS SO BAD I MADE IT WHEN I WAS LIKE 12//

The Young Justice League goes after Perciana Jackson.

After searching for years they're about to give up.
Just then when they got a lead on het, Percy defeats the 'JJ's' as she calls them. JJ stands for Junior Justice.

Most of the things she does is to piss someone off.

Percy defeats the Batman and they become more and more intrigued by her.

After Dick is introduced to her he already has a crush.

***
Percy's Superhero name is Tidal Wave and she's sort of OC. )