Master Ball
To catch Mewtwo in LeafGreen or FireRed no. To migrate Mewtwo from LeafGreen or FireRed to Diamond/Pearl/Platinum yes you have to have it in Diamond/Pearl/Platinum.
1. Mewtwo, if you catch him in the Cerulean Cave, he will be at Level 70!!!
Mewtwo is a legendary psychic type of Pokémon. Gary does not appear again after you catch Mewtwo in Pokémon Leaf Green version.
Try to get a ultra ball
No you can't you would have to have someone trade it for you or catch it on redfire/ leafgreen in celestic cave after finishing the league. hope it helps:)
Catch 'em all
you cant catch mewtwo in Pokemon emerald. to get it you must trade with either Pokemon firered or leafgreen.
you beat the elit four again
Use Action Replay
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You can't. You'd have to trade it from a Pokemon FireRed or LeafGreen game.
No you cant get Mew on leaf green, but you can get Mewtwo in Cerulean Cave.
You can't. You'd have to trade it from a Pokemon FireRed or LeafGreen game.
to catch suicune,mewtwo,raikou and entei
I believe you face the Elite 4 again.
No two Pokemon make mewtwo ,you must catch it in firered or leafgreen and if you want you can migerate it to diamond or pearl.
after you catch all the Pokemon and beat the eleat fore mewtwo gives it to you