Suggested by Sonic Rosalina may travel the cosmos, but that doesn’t mean she is ready for the big time. Mewtwo still has her beat in both attack and speed. He can hurl a lot of Shadow Balls at Rosalina to distract her as he goes in for the wind. Her projectile reflection may work for a while, but it leaves her open to attack. Since Mewtwo can switch up his attack patterns at will this does not bode well for the princess. Mewtwo wins.