This is a history of PokeClan so you don't get confused. :
PokeClan started when pokemon (due to a electrical accident) came to the real world as cats. Pikastar, then Pikachu, decided that he should start a clan to keep the pokemon safe. All of the pokemon who were against the idea were able to go back to their world.
Pikastar is the current leader, Charizard is the current deputy, and Gardevoir is the current medicine cat.
If you have any ideas on how the history should be written, post in the comments section!