Velma Dinkley (voice) (archive footage)

Nicole Jaffe

Acting

Norville 'Shaggy' Rogers / Robin (voice) (archive footage)

Casey Kasem

Acting

Scooby-Doo / Professor Flakey (voice) (archive footage)

Don Messick

Acting

Daphne Blake (voice) (archive footage)

Heather North

Acting

Fred Jones (voice) (archive footage)

Frank Welker

Acting

Batman (voice) (archive footage)

Olan Soule

Acting

The Penguin / Troll (voice) (archive footage)

Ted Knight

Acting