Complex sentence: He also voiced this character in an episode of "The New Scooby-Doo Movies" (1972), which featured the family, as well as in the 1973 animated series adaptation of "The Addams Family".
Split into simpler sentences: He also voiced this character in an episode of "The New Scooby-Doo Movies" (1972), which featured the family. As well as in the 1973 animated series adaptation of "The Addams Family".