BTW, these are just my opinion.....
The Original Four
Capt. Falcon/ Ethan Hawke
http://upload.wikimedia.org/wikipedia/en/thumb/a/a5/Captain_Falcon.jpg/250px-Captain_Falcon.jpg (broken link)
Seems to show great leadership and heroics in his acting.
Dr. Stewart/Jim Carrey
http://upload.wikimedia.org/wikipedia/commons/f/fa/Jim_Carrey_pressconf.jpg (broken link)
Very funny, but a great serious actor as well.
Samurai Goroh/Sammo Hung
http://content.answers.com/main/content/wp/en/thumb/d/dd/200px-Samurai_Goroh.jpeg (broken link) http://upload.wikimedia.org/wikipedia/en/thumb/b/bd/SammoHung_EasternCondors_screenshot.jpg/220px-SammoHung_EasternCondors_screenshot.jpg (broken link)
......It just seems to fit. I can't think of anyone else.....
Pico/Dustin Hoffman ?????
http://upload.wikimedia.org/wikipedia/en/thumb/2/2f/Pico_(F-Zero).jpg/250px-Pico_(F-Zero).jpg (broken link)
As a voice. I don't think he would want all that green paint on him. And maybe he wouldn't want to carry a shell around on his back, either.
More to come....