Frank Welker

Scooby-Doo / Fred Jones / Motoshondu (voice) (archive footage)

Casey Kasem

Shaggy Rogers (voice) (archive footage)

Grey DeLisle

Daphne Blake / Shawna (voice) (archive footage)

Mindy Cohn

Velma Dinkley (voice) (archive footage)

Jeff Bennett

Crunchy Granville / Fritz / Mr. Keenan (voice) (archive footage)

Mimi Rogers

Maura Ravenmane / Helga (voice) (archive footage)

Kevin Michael Richardson

Sharky Tazo / Stink Eye (voice) (archive footage)

John Stephenson

Zelig (voice) (archive footage)

Eva Almos

Captain Corvina Cloyd (voice) (archive footage)

John Gabriel

Dr. Armand Zola / Worker (voice) (archive footage)