HOLY SHIT I DID IT!!!!
*faints* ...I was so worried this was going to end in disaster, but holy shit, I atleast managed it decent enough. I feel like I did it half-assed, but I don't fucking care, so long as I got it done finally.
So here you have it, Final Fantasy XIII characters, as Crystal Ponies!
Final Fantasy (c) Square Enix
My Little Pony: Friendship is Magix (c) Hasbro
Edit: Made some switches of species on half the ponies you see before you. Lightning is now a Pegasus, Hope is now a Unicorn, and Sazh and Dajh are both Earth ponies.