Yes it is possible, you just need a thunder stone which you can get by buying at the pokeathalon dome for 2500 points or you can show Bill's grandfather a pichu(he's on route 25).
Yes it is possible all you need to do is get a thunderstone by going to bill's grandpa on the cerulean cape and show him a pichu.
first you might have to show him a few other pokemon.
How to change your username
How to add a user avatar
Why was my post hidden?
Flags vs Downvotes
Official PokemonDb League
Type a Pokemon name, type, move or ability to see instant results.