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Casting

Director

William Hanna, Joseph Barbera

Producer

William Hanna, Joseph Barbera

Writer

Joe Ruby, Ken Spears

Nicole Jaffe
Nicole JaffeVelma Dinkley (voice) (archive footage)
Casey Kasem
Casey KasemNorville 'Shaggy' Rogers / Robin (voice) (archive footage)
Don Messick
Don MessickScooby-Doo / Professor Flakey (voice) (archive footage)
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Heather NorthDaphne Blake (voice) (archive footage)
Frank Welker
Frank WelkerFred Jones (voice) (archive footage)
Olan Soule
Olan SouleBatman (voice) (archive footage)
Ted Knight
Ted KnightThe Penguin / Troll (voice) (archive footage)