In this timeline, Anthro Pokémon are very common, so they're not something rare at all. Regardless, now we head onto our story...

You were walking around a forest, just taking in the environment, and relaxing as you do... but all of a sudden, you're under attack via something fearsome: mud! Sounds ridiculous but trust me... you're stuck in the mud, and you cannot get out even if you want to, all hope seems lost... until you hear someone doing a fanfare and a feminine voice with a faked heroic accent is heard.

"Ha-ha! It's so unfortunate to be in that predictament... but fret not! I, the marvelous Keldeo, will be thy savior!"

And you saw her, an anthropomorphic unicorn pony standing in a tree stump, lifting a sword into the air, and wearing what seems to be a grey wool shirt and some jean shorts. She jumps down to rush at you, but almost stumbles, until ultimately reaching out to you, and repelling the mud with a Hydro Pump coming from her horn, and taking you out.

"Yes! My first rescue- Uh... ahem"

She goes back to the fake hero accent.

"Are thy okay, fellow citizen?"