Wacky Races
Stephenson reprised his role of Luke from "Wacky Races" in the "Wacky Races" video game in 2000. His voice work after 2000 included doing guest voices for "What's New, Scooby Doo?", "Johnny Bravo", as Ganthet on "Duck Dodgers", and he also portrayed Grandpa Squirrel on "Squirrel Boy". In 2004, Stephenson narrated the featurette "Space Age Gadgets" for "The Jetsons" First Season DVD box set. He also narrated the featurette "Wacky Inventions" for "The Flintstones" Complete Series DVD box set. In 2010, Stephenson played Sheriff on "Scooby-Doo! Abracadabra-Doo", marking the first time he voiced a character on a direct-to-DVD Scooby-Doo movie.