Sunny Leaf may seem like an ordinary pony, but she is actually a Chikorita!
 
Sunny Leaf was born in a ranch in Johto from a Meganium named Roseflor and a Nidoking named Smashero. When she was three months old, she wandered in a forest with her best friend (an Oddish named Shynelle) where they encountered a group of Celebi protecting a Shaymin egg. Shynelle started interrupting them by being too scared to stay calm, and the Celebi started attacking her. But Sunny Leaf decided to protect her friend, and was it by a Magical Leaf in the same moment that the Shaymin egg hatching, teleporting her in the Pony World (specifically, the My Little Pony: Stellar Destinies universe AKA the universe of my OCs) where she was taken in by a care-giving Earth Pony named Lovey Storktree (name pending).
 
The “My Little Pony: Stellar Destinies” universe is not anymore ambiented in Equestria, but a planet named the Ponystar Planet, who has several nations based on real-life cultures and various other things. The nation we would see most often is the Ponyharte Island, which is basically generic-Anglophone as Equestria is, because i am from Italy, but i do not absorb much Italian culture, as i feel “Americanized” within.
 
In “MLP:SD” there would be lots of crossovers, time travel, and advanced stuff like that. It would be much different (or at least a bit) to how MLP actually usually “is”.