Have you guys heard about this glitch that allows you to clone pokemon on emerald?
here's what you do.
1. Deposit ANY (from 1-5, as always gotta hold one) pokemon into any PC BOX.
2. Leave the PC and save again.
3. Go to the PC one more time and withdraw ANY 1-5 pokemon you want to clone from ANY PC BOX.
4. Talk to the lady on the far right, and she will ask you to join a Multi Battle.
5. Select Yes and choose any two pokemon.
6. When she asks "before entering a BATTLE ROOM, your progress must be saved. Is that okay?", select Yes.
7. If done correctly, the game will wait about 1-2 seconds before doing anything else.
8. Do not select yes when she asks "would you like to save the game? YES or NO (the One Second wait was the glitch taking place).
9. When the game asks you if you want to overright the save data. (yes/no) turn the game off.
9. Restart game and now the cloned pokemon (1-5 of them) are in the PC and in your party.