Stupid Mario Brothers
Coconut is a Time LordHow ELSE would he know about Link and everything?
Mario, Luigi, Wario, Waluigi and Decious are special FirebendersHow ELSE would they be able to make Fireballs Fire Flower-less?
Bowser will be the Big Bad of the Final SeasonHe's been around since the beginning and has yet to have an actual fight with the Bros. That practically screams foreshadowing.
The Dance Critic is The Lady of the Lake from Arther vs. the Druids vs. the GrailNotice the incantations she whispers just before Mario and Luigi show up.