Back story

As a young filly she won a rainbow race. She got her cutiemark and since then she has always wanted to be the fastest flier in all of Equestria and beyond. Her mother was a wonderbolt so for as long as she can remember she has always wanted to be a wonderbolt her self to perform fast and difficult tricks in the air.
She also happens to be a bat so is very found of mangoes and hanging from trees.