Casey Kasem

Shaggy (voice)

Grey DeLisle

Daphne (voice)

Mindy Cohn

Velma (voice)

Kathy Kinney

Sheriff Ellen Perkins (voice)

Frank Welker

Fred / Scooby-Doo / Headless Snowman (voice)

Peter Scolari

Professor William Fagen Higginson (voice)

Mark Hamill

Tommy's Father (voice)

Daryl Sabara

Tommy (voice)

Jim Belushi

Asa Buckwald (voice)

Scott Jeralds