On the way to Daphne's relatives' condominium, the Mystery Inc. gang detours through the town of Winter Hollow, where the vengeful Headless Snowman has destroyed the town's Christmas spirit.
| Actor | Role |
|---|---|
 Casey KasemShaggy (voice) | Shaggy (voice) |
 Grey DeLisleDaphne (voice) | Daphne (voice) |
 Mindy CohnVelma (voice) | Velma (voice) |
 Kathy KinneySheriff Ellen Perkins (voice) | Sheriff Ellen Perkins (voice) |
 Frank WelkerFred / Scooby-Doo / Headless Snowman (voice) | Fred / Scooby-Doo / Headless Snowman (voice) |
 Peter ScolariProfessor William Fagen Higginson (voice) | Professor William Fagen Higginson (voice) |
 Mark HamillTommy's Father (voice) | Tommy's Father (voice) |
 Daryl SabaraTommy (voice) | Tommy (voice) |
 Jim BelushiAsa Buckwald (voice) | Asa Buckwald (voice) |