I watched the first Pokémon movie and Pokémon genesect and the legend awakened and there are 2 mewtwo's, I say this because in the later movie mewtwo has no memory of Ash, coincidence?, I think not, also the voice actor is different, why
I suppose there are multiple Mewtwos then, even if the first one was made in a lab. https://www.youtube.com/watch?v=dMjQ3hA9mEA I remember the first movie but never saw this Genesect one, but I do remember in trailers that one having a female voice for Mewtwo. .
Huh that's interesting... That would explain things like Mewtwo showing up in Kalos xD This would make for an interesting plotpoint they could expand on somewhere. Like they could make a story on who made the others.