Mewtwo X is better at Attack and Defense than Mewtwo Y.
This is an opinion question, so opinions will vary by person. I personally prefer Mega Mewtwo Y, but that's just my opinion.
Mewtwo can Mega Evolve into either Mega Mewtwo Y or Mega Mewtwo X.
MEWTWO is a very strong Pokemon with the 2nd highest sp atk in the game!!! Its speed is good aswell!! In the Pokemon first movie mewtwo is enemy and against mew but mew beat him so they are both good.
You can catch Mewtwo at the Unknown Dungeon after beating the Elite Four and entering the Hall of Fame.
There’s no such thing as Mew X, but thanks to mega evolution, there’s such a thing as Mewtwo X and Y.
No, Mewtwo cannot evolve into Mewthree. Mewthree isn't an existing Pokémon however Mewtwo can use a Mega Stone in Pokémon X and Pokémon Y in order to mega evolve during battle into MegaMewtwo.
*Mew is not catchable in Pokemon x and y, but you can get him online from wondertrades and such. Mewtwo however, is catchable and you can find him in the cave in pokemon village.
The Mewtwonite X is exclusively for Pokémon X while the Mewtwonite Y is exclusively for Pokémon Y, so in order to get both Mega Stones (or more of the same one) and another Mewtwo in a single game, trading is required.
Mewtwo is the ultimate Psychic type legendary Pokemon. It was introduced in the first generation and does not evolve into any other Pokemon, although as of the sixth generation it can mega evolve into Mega Mewtwo X or Mega Mewtwo Y.
It reappears after defeating the Elite four again.
yes
Mewtwo cannot evolve, but it can mega evolve temporarily in Pokemon X, Y, Alpha Sapphire, and Omega Ruby by letting it hold a Mewtwonite X or Mewtwonite Y.