I was very skeptical when I first saw the design on the poster, but yeah, it looks pretty good in the game.
personally, I wouldn't be surprised if they made this an alternate form of the original Mewtwo. like, one day Mewtwo decided to alter and streamline its body in order to further boost its psychic powers and this is the result.
Waiting for golden Sun 3DS 2 things are infinite: The Universe and human stupidity. I'm not sure about the Universe, though -Albert Einstein