Suggested by Sonic Nightmare is one of those villains who doesn’t really fear anyone. Whenever he walks on the stage it’s the opponent who has to get a little scared. Well, this time he has met his match against the cosmic being known as Tabuu. While Tabuu is certainly not a Nintendo buster like you may have thought based on the story, he is still strong and has enough long range options to keep Nightmare at bay. Nightmare will never have a chance to get in close with all of the energy blasts and whips going at him. Tabuu wins.