My Guesses would be:
Capcom -------Megaman The Studio that created Viewtiful joe no longer exists. Megaman is more popular and more recognizable.
Monolithsoft ------Kosmos Female character, Moves already developed that would be easy to transition into Brawl, and since Monolith is now a Nintendo first party developer it would be a nice welcome.
Hudson------------Bomberman
Square-Enix-------Yuna Female character, Gun Mage, which makes her move-set unique. Final Smash: Summon Shiva.
Square-Enix------- Tifa Female character and was in Final Fantasy 7 a very popular RPG
Note: Yuna nor Tifa appeared on a Nintendo console but Final Fantasy originated on a Nintendo console and the main series does not have sequels until Final Fantasy 10-2.
Brawl will have a lot of unlockable characters as well as clones. Therefore any character is possible.



If Nintendo is successful at the moment, it’s because they are good, and I cannot blame them for that. What we should do is try to be just as good.----Laurent Benadiba







