HAHA...I know...wonder why I'm not making any sort of noise about this...I don't know. It should be in stages. Unless we are in a parallel universe that dictates that stages are characters.
Final Destination
Standard B - Summon Master Hand - Master Hand flies out of nowhere and slaps anyone nearby.
Up B - Warp - Final Destination goes into a background funnel-thingy and teleports.
Forward B - No idea. A simple bull rush?
Down B - Summon Gigabowser - Gigabowser flies from the top of the stage to land with a thud, hits anyone nearby, and then leaves.