User blog comment:Moonlit Sylveon/Mega Pokémon Ideas -- Which Pokémon deserve a Mega Evolution?/@comment-4129195-20140818131545/@comment-24297983-20140820232220

@Rainbow: Well, not quite. Mewtwo is a scientifically-created, mutated clone of Mew, and an entirely different species altogether, really. Mew was not created by cloning and genetic engineering -- she came first, born naturally -- so I don't see how the concept of a Mega Mew would conflict with Mewtwo.

@EnergyX: Ah, right! Mega Diancie too! Well, she's technically a small Legendary, like Mew and Celebi. I predict that the small Legends will indeed get Mega forms.