Scooby-Doo and the Ghoul School (1988)

Kemal Amin "Casey" Kasem (April 27, 1932 – June 15, 2014) was an American disc jockey, radio personality, and voice actor, who created and hosted several radio countdown programs, notably American Top 40. He was the first actor to voice Norville "Shaggy" Rogers in the Scooby-Doo franchise (1969 to 1997 and 2002 to 2009).

Donald Earle Messick (September 7, 1926 – October 24, 1997) was an American voice actor, known for his performances in Hanna-Barbera cartoons.[1] His best-remembered voice roles include Scooby-Doo; Bamm-Bamm Rubble and Hoppy in The Flintstones; Astro in The Jetsons; Muttley in Wacky Races and Dastardly and Muttley in Their Flying Machines; Boo-Boo Bear and Ranger Smith in The Yogi Bear Show; Sebas

Glynis Johns (October 5, 1923 - January 4, 2024) was a South African-born British actress, dancer, musician and singer. Born in Pretoria, South Africa, while her parents were on tour, she is best known for originating the role of Desiree Armfeldt in A Little Night Music on Broadway, for which she won a Tony Award, and for playing Winifred Banks in Walt Disney's musical motion picture Mary Poppins.