This is the final appearance of Scrappy-Doo in the 20th century. His next appearance was in Scooby-Doo (2002).
Vanna Pira is based on Vanna White of Wheel of Fortune (1983) and Maila Nurmi of Vampira Returns (1956).
Dracula spends the movie pronouncing Shaggy's name as "Sha-Gee". Years later, Chapter 20 (2004) introduced a character modeled after Shaggy named Sha'a Gi, whose name is pronounced the same as how Drac did it.
Daphne, Velma, and Fred don't appear in this movie.