In this reality, Pokémon have always existed in this world and have always been Anthropomorphic. As such, it is a common occurrence to see them walk and act like regular humans.
Now, back to our story.
You were having a walk around a park, when you suddenly encountered a Jigglypuff. However, you barely had time to greet the bouncy little thing before it just hop and skipped away.
Then, just a few moments later, you started to notice a regal presence, barreling towards your location.
"Outta mah way pipsqueak!"
Was what you heard before getting utterly trampled by none other than an Empoleon. However, while still trying to recover from such a royal rushdown, said Empoleon came back, lifting you up by the collar of your shirt.
"Hey you! Have ya seen a small, pink puffball 'round here?"