Billy / Billybot / Harold / Pale Ghoulish Juror / Chippy the Squirrel (voice) (as Richard Horvitz)
Richard Steven Horvitz
Mandy / Mandroid / Older Mandy / Milkshakes / Some Kid (voice)
Grey DeLisle
Billy's Mom (voice)
Jennifer Hale
Older Irwin (voice)
Dorian Harewood
Space Villain / Glacier of Evil / Dracula / Judge Roy Spleen / Underworld Cop (voice)
Phil LaMarr
2 Headed Parrot (voice)
Rachael MacFarlane
Horror (voice)
George Segal
General Skarr / Pirate #7 (voice)
Armin Shimerman
Executioner / Pirate #1 (voice)
James Silverman
Numbuh Three (voice)
Lauren Tom
Pirate #8 / Miniature Cyclops / Spider Clown Mailman / Beast Master (voice)
Billy West
The Boogey Man (voice)
Fred Willard
Grim / Sperg / Pirate #6
Greg Eagles
Irwin / Pirate #5 / Unicorn (voice)
Vanessa Marshall
I'll Cut You Guy / Pirate #2 / Horrorbot / Burnt Skeleton Guard (voice)
Maxwell Atoms
Peequay (voice)
George Ball
Bride of Frankenstein (voice)
Jane Carr
Creeper / Horror's Hand / Pirate #3 / Paperboy (voice)
Greg Ellis
Giant Cyclops / Ugly Pirate (voice)
Bart Flynn
Fred Fredburger / Pirate #4 (voice)
C.H. Greenblatt
Director
Robert Alvarez
Writer
Nina G. Bargiel
Storyboard Artist
Story
Characters
Executive Producer
Sound Editor
Glenn Oyabe
Background Designer
Cliff Voorhees
Animation Director
Hyung-tae Kim
Color Designer
Phil Rynda
Soo-hyun Park
Producer
Louis J. Cuck
Sue Perrotto
Kris Sherwood
Frank Homiski
Eva Wu
Matt Engstrom
Eddy Houchins
Production Manager
Sound Re-Recording Mixer
Timothy J. Garrity
Joe Binggeli
Shaun Cashman
Casting
Kris Zimmerman
Don Watson
Jennifer Pelphrey
Editor
Illya Owens
Eric Sequeira
Russell Calabrese
Art Direction
Marc Perry
Prop Maker
Mark Bachand
Sound Engineer
Robert Serda
Phil Cummings
Gordon Kent
Michel Lyman
Anna Chambers
Jesse Aruda
Dialogue Editor
Jim Hearn
Visual Effects
Azariah Owens
Rob Desales
Post Production Supervisor
Alicia Parkinson
Production Accountant
Shalonda Ware
Pietro Piumetti
Ben Pile
Christine Kolosov
Joo-Shik Yoo
Lee Jae Bok
Executive In Charge Of Production
Jay Bastian
Kwang-bae Park
Brian A. Miller
Tony Tedford
Brad Brock
Animation
Sandy Benenati
Supervising Technical Director
Antonio Gonella
Jeremy J. Bargiel
Tara Whitaker
Jay Baker
Chris Headrick
Chris Mitchell
Spencer Laudiero
Mike Diederich
Ian Wasseluk
Alex Almaguer
John Holmquist
Bill Flores
Original Music Composer
Drew Neumann
Gregory Hinde
Sound Director
Juli Murphy