L+R. Then discard the amount of master balls to equal the pokemon's national number
press l and r while playing the game
If you migrate Pokemon or have an action replay If you migrate Pokemon or have an action replay
Buy a action replay and then downlode the cheat onto the action replay. Put the action replay in the game slot then put Pokemon in the action replay. After that you pick the Pokemon game you are playingnthen start the game and then you will be able to catch trainers Pokemon.
Get an action replay and get Pokemon modifier code! or activate Pal Park by getting the National Dex, Catch one in FireRed or Leaf Green, Transfer to your game Via Pal Park, and Catch it there (Good choice if you lack an action replay)
You use an action replay.
You have to use the action replay to catch them.
you cant
you can't
if you have the action replay
with action replay codes you can catch any you like including mew and so forth
Action Replay
there are codes for rare and legendary pokemon.