Scooby-Doo! and the Witch's Ghost (1999)

Scott Innes (born October 1, 1966) is an American voice actor, author, songwriter and radio personality. He is best known for his voice over work in various Warner Bros. and Hanna-Barbera animated films, television shows, video games and commercials, most notably as Scooby-Doo, Shaggy Rogers, Scrappy-Doo, Popeye the Sailor, Fred Flintstone, Barney Rubble, Foghorn Leghorn, Muttley, Bugs Bunny, Yogi

Mary Kay Bergman (June 5, 1961 – November 11, 1999), also credited as Shannen Cassidy, was an American voice actress and voice-over teacher. Bergman was the lead female voice actress on South Park from the show's 1997 debut until her death. Throughout her career, Bergman performed voice work for over 400 television commercials and voiced over 100 cartoon, film, and video game characters.

Franklin Wendell Welker (born March 12, 1946) is an American voice actor with an extensive career spanning nearly six decades. As of 2021, Welker holds over 860 film, television, and video game credits, making him one of the most prolific voice actors of all time. With a total worldwide box-office gross of $17.4 billion, he is also the third highest-grossing film voice actor of all time.