You can't, Mewtwo is not available in Platinum.
mirgrate or trade from anothher version
how do you catch a mewtwo on Pokemon platinum
I believe you are talking about mew or mewtwo
You cannot get a Mewtwo in Platinum.
It's impossible to find Mewtwo in Platinum.
you cant catch mewtwo in Pokemon platinum peral diamond you can in Pokemon heart gold and solsilver in canalave cave
Mewtwo isn't avalible in platinum (not without cheats anyway) and there is no such Pokemon. I haven't a clue how you've heard of Cyber Mewtwo. Sorry.
To Catch Mewtwo You Need A Action Replay.
u cant get mewtwo in platinum. But, you can get him on: Firered, Leafgreen, ect.
You cannot get Armored Mewtwo in Pokémon Platinum because Pokémon Platinum doesn't have programming data for Armored Mewtwo. Armored Mewtwo is exclusive to the animé series.
caugth the mew and give it to evolve,than it will be mewtwo...