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This Level is a hard one. You get to pick almost everyone but Sonic. You will fight very tough foes and finally Tabuu turned all of your characters into trophies.

Then, Tabuu made the great maze in which you will later fight every boss you fought before and fight evil clones of your characters.

Afterwards Ness, King DeDeDe, Kirby and Luigi are revived by Badges and end up reviving all fallen warriors that turned into trophies.