Take a country/state and give it:
-Paired game names
-3 starters
-A professor
-A rival
-A villian team
-2 box legendaries
-A champion

>Country
Chile
>Game names
Pokemon Earthquake and Tsunami
>Starter
Grass Pudu, Fire Condor, Water Sea lion
>Professor
Professor Araucaria, indigenous woman that studies pokemon that changes the enviroment
>Rival
Kuina, upity snoby girl that wants to catch up the sublimity of her kalosian cousins

Rolo, impolite poor boy that does what he wants and always is in trouble
>Villian team
Team Hex, a group of warlock-esque criminals that did a deal with a mythical pokemon and got cursed, now they do the will of this wicked pokemon.
>Legendaries
Two giant (dynamaxed?) snakes (ground/dragon & water/dragon) that lives at each extreme of the region, they dominate and shape their territories with earthquakes and tsunamies.
>Champion
Commander chief of a trainer army that fights the legendary snakes.