I originally wasn't going to do this until AFTER I got the game but...after seeing Waffuru's post, I had to do it.

Terra-Christian Bale-You call him Batman, I call him Howl.
Aqua-Willa Holland-She was Audrey in the movie Legion and Kaitlin from The O.C.
Ventus-Jesse McCartney-But we all probably guessed that, some of us were hoping.
Master Eraqus-Mark Hamill-We know him as Fire Lord Ozai, his voice is still epic. But I'm sure you guys know him as...Luke Skywalker.
Master Xehenort-Leonard Nimoy-Oh how I've waited to say this...HE'S SPOCK!! He's also the king from Atlantis: The lost empire.
Vanitas-Haley Joel Osment-That's just cool...

Okay *takes deep breathe* I'm done...hopefully.