A reformed villain. Used to be Princess Celestia's best student, but then betrayed her and escaped to Equestria Girls reality.
Used to do pretty bad things, such separate the mane-six by breaking their friendship with lies and misunderstandings between them. Used to date Flash Sentry too, but just to get more popularity and then being feared; left Flash Sentry when she got popular enough.
Her popularity and fearsomess made her win every Fall Formal.
She redempted after being defeated by Twilight