Scooby-Doo on Zombie Island (1998)

IMDB
Genre : Animation, Adventure, Comedy
TRAILER
Director : Jim Stenstrum
Stars : Scott Innes, Billy West, Mary Kay Bergman, Frank Welker
Plot : The Mystery Gang reunite and visit Moonscar Island, a remote island with a dark secret. Daphne wants more than just a villain in a costume, and they get more than they ever expected.