A cosmic case of flying saucers, intergalactic intrigue and out-of-this-world romance launches Scooby-Doo! and the Mystery Inc., Gang into their most unearthly adventure ever.
Scott Innes
as Scooby Doo / Shaggy (voice)
Mary Kay Bergman
as Daphne Blake (voice)
B.J. Ward
as Velma Dinkley (voice)
Frank Welker
as Fred Jones (voice)
Candi Milo
as Crystal / Amber (voice)
Neil Ross
as Sergio / Buck (voice)
Jennifer Hale
as Dottie (voice)
Jeff Bennett
as Lester (voice)
Audrey Wasilewski
as Laura (voice)
Mark Hamill
as Steve (voice)
Kevin Michael Richardson
as Max (voice)
