All Cast

Nicole Jaffe
Velma Dinkley (voice) (archive footage)

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

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

Heather North
Daphne Blake (voice) (archive footage)

Frank Welker
Fred Jones (voice) (archive footage)

Olan Soule
Batman (voice) (archive footage)
