You can't.
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.
u cant get mewtwo in platinum. But, you can get him on: Firered, Leafgreen, ect.
The Pokemon modifier cheat on the Action Replay or migrate it from Fire Red or Leaf Green to Pal Park on Platinum.
I believe you are talking about mew or mewtwo
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.
how do you catch a mewtwo on Pokemon platinum
You can't, Mewtwo is not available in Platinum.
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...
You cannot find Mewtwo in Pokémon Platinum. you have to migrate it tto the pal park after you get the national pokedex.
it is mew and mewtwo with a masterball