Our friend Paul Mercier has been credited with doing the voice of Resident Evil 4's Leon Scott Kennedy for Super Smash Bros. Brawl on the IMDB (Internet Movie Database). This is just a rumor and there is no way of knowing if this is true or not because it turns out that users can "adjust" these lists for actors. It is possible that this is just a hopeful fan, but there is no way to know this for sure. Only a month to find out!
Check out the links below: