Defeat the Elite Four! Good Luck!!
you need to do the Pokemon league
You can find Mewtwo in the Cerulean Cave.
no, firered or leafgreen
You can get Mewtwo in the Cerulean Cave.
Mewtwo, yes, if you have a FireRed or LeafGreen with Mewtwo.
mewtwo is in cerulean cave
There is no Mewthirty, there is only Mewtwo.
No migrate him from firered or leafgreen to get him.
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.
Mewtwo doesn't learn Psybeam.
you cant catch mewtwo in Pokemon emerald. to get it you must trade with either Pokemon firered or leafgreen.
articuno zapatos moltres and mewtwo