User blog comment:AlexSmasher/Mewtwo just proved something/@comment-10885667-20141028161822

This could be true for the next game. But, definitely not in this version if Dixie Kong, King K. Rool, Ridley, Dr. Eggman and Shadow the Hedgehog (or others, maybe DLC's) are who you wanted, sorry to break it to ya, but they haven't made the cut. They would've been confirmed along with Mewtwo, or since they're all newcomers, along with the others. So, no.