Xiado said:
Ganondorf. REAL Ganondorf.
Final Smash: HE USES HIS EFFING SWORD!
I was just about to say this, actually. I want a Ganondorf that doesn't suck!
Beyond that, I'd love to see Ratchet (and Clank, duh), from the series of the same name.
Final Smash: the RYNO. 'Cause, you know, he'd Rip Ya a New One.
Or Auron from FFX. His Final Smash could be a random choice between his Overdrives: a flaming Tornado (like Entei or HoHo's Poke-attack), Shooting Star (insta-kill, like Marth's?), or the other two sword swings (for high damage against a single target).
And the idea of a random Final Smash reminds of a certain other Final Fantasy character: Gilgamesh! Excalibur/Excalipoor anyone?
(...so they're not from Nintendo; who cares? This is purely hypothetical anyway.)