Everyone's favorite lil shit. Rainbow Dash is cocky and braggadocious, and a MISERABLE sore loser. All that attitude hides an anxious, insecure core; Rainbow has never been sure any pony likes her for reasons that don't benefit them. It makes her kind of a pill to be around, but as she's the youngest of the Mane Six, they're all pretty sure she'll grow out of it.
Rainbow's Stand is [Great Gig], named after the Pink Floyd song; I really wanted to use Dark Side of the Moon as visual inspiration for her Stand. [Great Gig] manifests as a pair of large, angular wings. Since all ponies in this universe are earth ponies, I knew I had to use Rainbow's Stand to let her fly lol. It's like. Her main thing! She doesn't have to flap with [Great Gig], as basically all control over her flight is done via her mind, but she has to take physics into account at least, since no amount of psychic control can pull her up out of a too steep dive. Rainbow's primary role in fights is swooping around to divebomb enemies, usually being more of a nuisance that doing actual damage.