Its Mega Mewtwo, She appears in the newest pokemon movie. The one with Genisect. I'm not totaly against her, but I wish they had Ash mention to her she wasn't the only Mewtwo. The movie just didn't make much sense. After all, Mewtwo didn't erase Ahs' memory of meeting Mewtwo the second time around
If this "Newmew" really is actually Mewthree, then I guess I can grow to accept it as a new member of the Mew family. I mean, I thought it was ugly at first, but the design has actually kind of grown on me... even though it's just the Mewtwo design with red eyes, and its tail on its head for some reason. People are saying that it's definitely a new form of Mewtwo rather than a new Pokemon, though. If that's the case, I'm sorry, but... no. Just... no. It doesn't even make any sense, Mewtwo being man-made and all. And I'm really getting tired of all of these legendaries having forms. *sigh* They ruined my favorite pokemon.