I started to mess with my own pony design. It started out as an Earth Pony, but then a buddy was asking about him "Is he this or that?" and I was "Wow, didn't think about Pegasus. Oddly enough, I started to draw him as a Unicorn, just to see, and thought he looked adorable.

So here's a story:
A pony is found, who is possessed by evil magic, and Princess Celestia tries to stop him from destroying everything. Luna has to join in, and due to her own evil past, is able to wrangle the wild pony. She takes him in, for he's lost his memories, and needs to control the magic. He becomes her student. She names him Harmony Spirit, for that which saved her in her dark times, and because normal, he really shares the qualities of the Elements.