Yes but you have to beat all gym leaders again. look in you pokenav and see if they want a rematch yet.
Chat with our AI personalities
No. In Pokemon Emerald Version, you can only obtain Pokemon from generations 1, 2 and 3.
no but you beat the game you may migrate a mudkip from Pokemon emerald version /leafgreen/firered/Sapphire/and rubie.
Cheat.
clone rare candies
You must trade it from Pokemon firered or Pokemon leafgreen