http://www.youtube.com/watch?feature=player_embedded&v=C-4zzSN2dFA

I personally feel that Lucario, Mewtwo and Charizard will make return for sure due to the new Mega-Evolution and popularity, but I feel they're going to replace jigglypuff and possibly add a couple new Pokemons. 

My first suggestion would be..... *cough*..

Second suggestion: Pangoro

This fella quickly became a fan favorite for alot of Pokemon fans when he was first introduce I believe back in Spring. Base on his design, I can definitely see a clear move set for Pangoro. From using the anicent martial art of kung fu to make a couple of dark type moves. The possiblies are endless.

Third Suggestion: Blaziken aka (Mega-Blaziken)

Same reason with Pangoro

What are your suggestion what new pokemon do you suggest should be in the new Smash Bros.?

The reason I posted this because their bound to announce some new fighters for Smash Bros due to the release of X and Y.

Any of the Starters from X/Y would be good for Super Smash Bros. considering they are all standing. Or crouching, in the case of Greninja. That would make it seem more natural for them to fight in a game like SSB.

I'm voting hoping for Team Chesnaught, I really grew to like his design.

Bring mewtwo back and let him transform into Mewtwo X/Y.

Jigglypuff's grandfathered in. Like Ness, she's just a part of Smash history now.

I would say Zoroark, actually. No one Gen VI Pokemon has gained his promotional popularity, yet.

I want Delphox, Chesnaught, and Greninja to be in the game like the Pokémon Trainer, where you switch between the three. Delphox does the ranged attacks, Chesnaught is the hard hitter, and Greninja does fast attacks like a ninja.