Bosses
Mewtwo
Roy
Story Mode: Revenge of the Rejects
Mewtwo
persuades Roy into joining him to take over the Smash World. The duo starts to wreak havoc and brings in reinforcements to help: Dr. Mario, Young Link, and Pichu. However, the sadistic presumed "kid" creates an evil embodiment capable of mass destruction, even more powerful than Tabuu. As the kid's mind slips into deeper insanity than what was seen in the previous installments, Mario & Co. need to beat Mewtwo and Roy, get them on their side, and stop the raging kid's creation from eradicating everything.
You'll battle Roy, then Mewtwo later on. After, they'll both challenge you to a tag team battle, with
this music as the battle theme, with Eight Melodies and all.