Yes it is in a cave.
Mewtwo, yes, if you have a FireRed or LeafGreen with Mewtwo.
use a master ball on it
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.
u cant get mewtwo in platinum. But, you can get him on: Firered, Leafgreen, ect.
kabamba
you can not get mewtwo in Pokemon ruby,sapphire,leafgreen or fire you can only get him on pearl ,dimond and platinum
Mewtwo.
Mewtwo!
Mewtwo is found in cerulean cave.
no, firered or leafgreen
Mewtwo, yes, if you have a FireRed or LeafGreen with Mewtwo.
Catch 'em all
He is at the end of cerulean cave.
No migrate him from firered or leafgreen to get him.
you cant catch mewtwo in Pokemon emerald. to get it you must trade with either Pokemon firered or leafgreen.
Mewtwo? Plus you cannot get Mew in Leafgreen or Firered.
Face the Pokemon League again