Anna isn't happening, Dr. Kawashima has like no tangible moveset that seems unique (if you want a floating head character with a moveset, choose Andross), and Tom Nook at least is possible.
I still don't know what/who that is below Wario.
Anyways, I am done with this topic.
Let's talk about panda Pokémon instead, and why they should be playable.
Oh, and just because we've never seen a floating head character is Smash doesn't mean it's a good idea. I mean, just because I never had gonorrhea doesn't mean I should get it.