Pokemon Emeral Glitches

1. You have to beat the elite four

2. You have to go to battle frontier

3. Go to battle tower

4. Go to their PC

5. Go to Lanette's PC and deposit the pokemon that you want to duplicate

6. Then save your game and take out the pokemon you want duplicated

7. Go talk to the wirless link double battle person(she'll be the first CPU battle girl that you see, she'll say that you need to save after you pick your 2 pokemon and all that and say yes.

8. There will be a pause and it'll come up you need to save.... say no and turn off the system

9. Turn the system back on and you'll have the pokemon that needed duplicated in your Party and one of them in your PC.

I got that off wiki answers.