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

Frank Welker

Shaggy Rogers (voice) (archive footage)

Casey Kasem

Daphne Blake (voice) (archive footage)

Grey DeLisle

Velma Dinkley (voice) (archive footage)

Mindy Cohn

Miranda Wright (voice) (archive footage)

Miranda Cosgrove

General Niedermeyer (voice) (archive footage)

Jeff Bennett

Frankie Martin / Shawn (voice) (archive footage)

James Arnold Taylor

Executive Producer

Joseph Barbera

Researcher

Rich Dickerson