The Champion of the Sinnoh region. As a pony :D
Yes, she would be an Alicorn. She's one of the most powerful trainers in the world. Why wouldn't she be an Alicorn? xD
Just a little sketchy that I am finishing.
Enjoy~
(MLP:FiM (c) Hasbro)
(Pokemon (c) Satoshi Tajiri/Nintendo/Game Freak)