Scooby-Doo / Fred Jones (voice)
Frank Welker
Shaggy Rogers (voice)
Matthew Lillard
Uvinous "U-Boat" Botango / Drake (voice)
Kevin Michael Richardson
Clark Sporkman (voice)
Eric Bauza
Daphne Blake (voice)
Grey DeLisle
Velma Dinkley (voice)
Mindy Cohn
Zip Elvin (voice)
Mark Hamill
H.A.M. (voice)
Diedrich Bader
Sly Baron (voice)
Malcolm McDowell
Hudson Baron / Alien (voice)
Fred Tatasciore
Shannon Lucas / Ridley / Launch Manager (voice)
Jennifer Hale
Colt Steelcase (voice)
Jeff Bennett
Director
Paul McEvoy
Writer
Mark Banker
Producer
Editor
Kyle Stafford
Original Music Composer
Andy Sturmer
Casting
Lisa Schaffer