This is an interesting theory I've been reading about, but, do any of you think that Mewtwo will play a role in X&Y?
With the announcement of Mewtwo being the secret Movie 16 star, I kinda wonder what this may mean for the games. Even though it's unlikely, it might mean something. Previous generations were heavily promoted by the movies leading up to their release, but in this case the stars of the main movie (as opposed to the short) aren't new species. While Genesect was due for a movie role, Mewtwo already has a movie and a special (technically two specials) under its belt. Why would the Pokémon Company want the movie to be focused on Mewtwo unless it were relevant to the upcoming games?
Mewtwo's name has already been brought up in the context of X and Y due to the probable Genetics theme. But some fans seem to have dismissed that theory simply on the basis of Mewtwo (and Mew and Deoxys for that matter) being old news. But if Mewtwo is good enough for the movie, why would it seem out of place in the games? If anything, there should be some old legendaries in the games so that Game Freak don't have to go overboard with new legendaries just to fill some quota of sidequests. A lot of existing legendaries have untapped potential story-wise, and Mewtwo and Mew are among the prime examples.
While a movie-related download could work, Mewtwo has already been distributed in the current generation. It would be far better if it were catchable in X and Y and had some connection to the main story. Not only could Mewtwo's real origin story be finally told in full, but I could also see a connection to the new bonding feature. Dr. Fuji may have created Mewtwo solely for battling, but Mr. Fuji clearly doesn't see Pokémon that way. No doubt Mr. Fuji would want Mewtwo to finally find a trainer that could manage to open its heart and earn its trust.
On another note, the theory about Mew being the ancestor of (most) Pokémon could finally be touched upon. I wouldn't be surprised if Mew were connected to Xerneas and Yveltal. I mean, I personally think Mewtwo and Mew can have the potential of making a return with the theme of genetics. I mean, in the game, what do we actually know about Mewtwo other than it was man-made from Mew's genes, and that it was designed to be the ultimate fighting machine? I mean, aside from the anime, I think that maybe they can show more of Mewtwo's own personal feelings and own willpower. Well, I guess the question of the day might be, would Mewtwo influence the Gen 6's legendary pokemon? And will Mew make a brief scene as well? There's kiiind of not that much we know about Mew as well; he's suggested to be the 'ancestor' of all pokemon and supposedly has the genes of all pokemon because it can learn every move.