Scooby-Doo and the Reluctant Werewolf (1988)

Shaggy is turned into a werewolf, and it's up to Scooby, Scrappy and his girlfriend to help him win the contest.

Director: Director, Ray Patterson,

Cast: Don Messick, Casey Kasem, Hamilton Camp, Jim Cummings, Joan Gerber, Ed Gilbert, Brian Stokes Mitchell, Pat Musick, Alan Oppenheimer, Rob Paulsen, Mimi Seaton, B.J. Ward, Frank Welker