yeah, i've expressed this before, i dont think that Chimchar is his starter
No one has said clearly enough so that we KNOW that Paul is a starting trainer. It says so on serebii, but he doesn't act remotely like a ten year old, if he was ten, he'd be just as clueless as dawn is now I think he's around Ash's age and caught Elekid before he went to sinnoh, what became of his other pokemon, i havn't a clue, and i don't know why, seeing as he wants the strongest pokemon, he didn't bring them with him.
Hopefully the creators will make an episode explaning Paul, his attitude, and his life before sinnoh