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Casey Kasem as Shaggy (voice) |
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Grey DeLisle as Daphne (voice) |
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Mindy Cohn as Velma (voice) |
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Kathy Kinney as Sheriff Ellen Perkins (voice) |
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Frank Welker as Fred / Scooby-Doo / Headless Snowman (voice) |
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Peter Scolari as Professor William Fagen Higginson (voice) |
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Mark Hamill as Tommy's Father (voice) |
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Daryl Sabara as Tommy (voice) |
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Jim Belushi as Asa Buckwald (voice) |
| Directing | Scott Jeralds | Director |
| Writing | Jonathan Collier | Writer |
| Writing | George Doty IV | Writer |
| Writing | Jim Krieg | Writer |
| Writing | Ed Scharlach | Writer |
| Production | Joseph Barbera | Executive Producer |
| Production | Pieterjan Kneynsburg | Supervising Producer |
| Production | Sander Schwartz | Executive Producer |
| Art | Marcus Williams | Storyboard Artist |
| Production | Chuck Sheetz | Producer |
| Sound | Gigi Meroni | Original Music Composer |
| Sound | Rich Dickerson | Original Music Composer |
