Flare Dash, daughter of Rainbow and Sorain is definitely sure she is the best in flying, cause of her great parents. She outwit everywhere about how great she is. In fact there is one pony who is better than Flare :)
Shadow Mist (Fluttershy x Bulkbiceps) is a not very talkative, he prefer lonely and saint calm. Ponies like Flare irritate him so much, this is the reason why he prefer empty places. Mist had that from he was a little foal, and he training on his own in far places. He became a best flying pony, but Flare doesn't know this.