Meet Heavy, a big and strong pegausus who never learned how to fly.

Part of her bio can be find here: http://www.furaffinity.net/view/11242536/

Since young, Heavy was accustomed to live in loneliness, having only her sister, Shining Wish as company. Her parents always looked down to her for she was a pegasus, different from her "pure" unicorn family.
Heavy's biggest dream was to fly through the skies and one day live in Cloudsdale, the "Pegasus Paradise" like she called the city, but her parents never let her practice flying, for this could cause someone to see her, which was the last thing the wanted.
When she was still a filly, her sister and her were sent to live with their grandaunt who also happened to be an pegasus, but unfortunately one of her grandaunt wings never had recovered from an accident from when she was still a young mare.

When she started to go to school the other ponies made fun of her, for she was away bigger than most normal fillies, and even though she was an girl, everyone who seen her always mistook her as a boy. Back in that time she was also an crybaby, crying over anything.
After her grandaunt's death, the onlyone who was left to her was her beloved sister, who she swore she would protect not matter what, also she never let anybody mess with her or make her cry anymore, for now she had an promise to keep.

Once she grew up she began wearing an cloak to hide her wings and the fact that she don't have an cutie mark ( her guess is that her cutie mark must have something to do with flying, and since she don't know how to fly she can't get her cutie mark.)
Despite all of the bad things in her live, she is pretty happy with her life and really grateful for her sister, the only one who never leave her side and loves her for who she is.

Sorry for the bad spelling or/and grammar!