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Casey KasemShaggy (voice)
Grey DeLisleDaphne (voice)
Mindy CohnVelma (voice)
Kathy KinneySheriff Ellen Perkins (voice)
Frank WelkerFred / Scooby-Doo / Headless Snowman (voice)
Peter ScolariProfessor William Fagen Higginson (voice)
Mark HamillTommy's Father (voice)
Daryl SabaraTommy (voice)
Jim BelushiAsa Buckwald (voice)
