What Are the Best Mega Evolutions in Pokemon X and Y?

Mega Mewtwo X and Y 1 of 16

Type: Psychic/Fighting (X), Psychic (Y)

Ability: Steadfast (X), Insomnia (Y)

Mewtwo is back and badder than ever in Pokemon X and Y. Mega Mewtwo X gains the fighting type and a lot of attack power, but Mega Mewtwo Y gains even more special attack power and can't be put to sleep.

 

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