Frank Welker (56)

Fred Jones / Scooby-Doo (voice)

Casey Kasem (70)

Shaggy Rogers (voice)

Mindy Cohn (36)

Velma Dinkley (voice)

Grey DeLisle (29)

Daphne Blake (voice)

Lindsay Pagano (16)

Self (voice)

Kath Soucie (41)

Susan Dinwiddie (voice)

Brian Unger (37)

Avalanche Anderson (voice)

Héctor Elizondo (65)

Dr. Gutierrez (voice)

Dave Foley (39)

Laslow Oswald (voice)

Bumper Robinson (28)

Cap N' Robbie / Native Bearer (voice)

Larc Spies (16)

Andy Dinwiddie (voice)

Jesse Borrego (40)

Luis Cepeda (voice)

Kerrigan Mahan (47)

Del Stone (voice)

Rip Taylor (71)

Mr. Wackypants (voice)

Jason Harris (33)

Flapjack / Announcer (voice)

Josh Peck (15)

Damian / Kid / Zombie Kid #2 (voice)

Chris Klug

Self (voice)

Mimi Rogers (46)

Maura Ravenmane / Helga (voice)

Daryl Sabara (10)

Tommy / Steve (voice)

Matt Levin (30)

Ticket Taker / Matt (voice)

David Faustino (28)

Curt Crunch (voice)

Lauren Tom (41)

Nancy Chang (voice) / Mandy Dinwiddie (voice) / Heather Lane (voice)

Eddie Deezen (45)

Gibby Norton (voice)

Laraine Newman (50)

Wor-El (voice)

Corey Burton (47)

Gusano Grande (voice)

Jess Harnell (38)

Lute Player / Shane Flinty / Constable (voice)

Jim Cummings (49)

Broderick Bosepheus / Humongus Hammer (voice) / Cyrus T. Buford / Crawdad Mike / Joe (voice)

Tasia Valenza (35)

Brooke Bjork (voice) / Lupe Chesares / Wormian #2 (voice)

John DiMaggio (34)

Mike Fury (voice) / Taylor Leland / Police Officer (voice) / Glasburgh Dragon / Officious Dwarf / Judge (voice) / Sanfran Psycho (voice) / Malachi Crunch / Titanic Twist (voice)

Beng Spies

Murph / Randy Dinwiddie (voice)