It depends on which version you are talking about.*
Pokemon Red, Blue, and Yellow: After completing all eight gyms and earning all eight badges, and defeated the Elite Four, there is a cave in which you can surf around the gate and enter in Cerulean City. The guy who blocks the entrance has either moved aside, or disappeared. There is a labyrinth, with Pokemon ranging around the level 50s and 60s.
Pokemon Ruby, Sapphire, and Emerald: You cannot get a mewtwo unless you have a Game Shark or an Action Replay, or any other kind of cheat.
Pokemon Diamond and Pearl: If you have a mewtwo in Pokemon Ruby, Sapphire, or Emerald, you can first put the mewtwo in the computer. Then, put it in the bottom slot of a DS or DS Lite, and put Pokemon Diamond or Pearl in the top DS slot. Go to Pal Park (can only be done after defeating Elite Four). There, you can play the game and capture the mewtwo into your Pokemon Diamond or Pearl.
*Mewtwo tricks not listed for versions Fire Red, Leaf Green, Platinum, Gold, and Silver. The trick is most likely applicable to these versions, but just are not listed anywhere above.
Mewtwo X is better at Attack and Defense than Mewtwo Y.
Mewtwo is a clone character of Mew, so yes but Mewtwo is a clone to Mew. Mewtwo is a clone of Mew, so yes he is but Mewtwo is a clone
Mewtwo can Mega Evolve into either Mega Mewtwo Y or Mega Mewtwo X.
Huh? I have no idea what you're talking about, but Mewtwo is in Melee only. Mewtwo is not in the original or Brawl.
the most powerfull Pokemon is mewtwo but people think its areceus when its not on Pokemon explores of time it is darkrai on darkness it is mewtwo on platinum it is mewtwo on dimond it is mewtwo on pearl it is mewtwo on blue rescue team it is mewtwo on red rescue team it is mewtwo on chores black it is mewtwo on ruby it is once again mewtwo i could go on for ever but i am trieng to make my point :)
Phillip Barlett did the voice of Mewtwo in the movie "Mewtwo Strikes Back" and in the special "Mewtwo Returns." Miriam Pultro did the voice of the Mewtwo in "Genesect and the Legend Awakened."
Of course it's Mewtwo!
Team Rocket made Mewtwo in a lab Mewtwo was a clone of mew
Mewtwo cannot evolve.
You can't evolve mewtwo!!!!!!!!!!!!!!
Mewtwo has no evolutionary stages, so to answer your question: no mewtwo does not evolve
Mewtwo Strikes Back, is the original, and first movie within the Pokemon series. Mewtwo returns is technically the sequel to Mewtwo Strikes back, being the second movie(?) starring Mewtwo.