Scooby-Doo / Fred Jones (voice)

Frank Welker

Acting

Shaggy Rogers (voice)

Matthew Lillard

Acting

Daphne Blake (voice)

Grey DeLisle

Acting

Velma Dinkley (voice)

Mindy Cohn

Acting

Zip Elvin (voice)

Mark Hamill

Acting

H.A.M. (voice)

Diedrich Bader

Acting

Sly Baron (voice)

Malcolm McDowell

Acting

Hudson Baron / Alien (voice)

Fred Tatasciore

Acting

Shannon Lucas / Ridley / Launch Manager (voice)

Jennifer Hale

Acting

Colt Steelcase (voice)

Jeff Bennett

Acting

Uvinous "U-Boat" Botango / Drake (voice)

Kevin Michael Richardson

Acting

Clark Sporkman (voice)

Eric Bauza

Acting