James Earl Jones was a voice actor in a movie.
In 1985, Jones lent his bass voice as Pharaoh in the first episode of Hanna-Barbera's The Greatest Adventure: Stories from the Bible
 Darth Vader was portrayed in costume by David Prowse in the film trilogy, with Jones dubbing Vader's dialogue in postproduction because Prowse's strong West Country accent was deemed unsuitable for the role by director George Lucas

