A person who lends their voice for recording, often for animation
. Mel Blanc
was one of these, for Warner Bros.
' Looney Tunes cartoons
. They are also hired for video games, narrators in commercials, unseen radio announcers in movies, and things of that sort.
As an interesting note, many companies hire Canadian
voice actors over American ones, because they're significantly cheaper. Capcom
does this, for example, in their Resident Evil
games; nobody seems to be able to pronounce Raccoon City/raccoon properly. ;)