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
Russell Calabrese
Shaun Cashman
Phil Cummings
Matt Engstrom
Eddy Houchins
Gordon Kent
Christine Kolosov
Michel Lyman
Sue Perrotto
Kris Sherwood
Animation Director
Joo-Shik Yoo
Soo-hyun Park
Kwang-bae Park
Hyung-tae Kim
Lee Jae Bok
Producer
Louis J. Cuck
Jennifer Pelphrey
Brian A. Miller
Editor
Illya Owens
Casting
Kris Zimmerman
Art Direction
Marc Perry
Executive In Charge Of Production
Jay Bastian
Production Manager
Post Production Supervisor
Tony Tedford
Prop Maker
Mark Bachand
Anna Chambers
Sound Editor
Jesse Aruda
Sound Re-Recording Mixer
Brad Brock
Timothy J. Garrity
Dialogue Editor
Jim Hearn
Glenn Oyabe
Eric Sequeira
Sound Engineer
Robert Serda
Visual Effects
Azariah Owens
Animation
Sandy Benenati
Joe Binggeli
Frank Homiski
Color Designer
Phil Rynda
Background Designer
Cliff Voorhees
Don Watson
Eva Wu
Rob Desales
Alicia Parkinson
Supervising Technical Director
Antonio Gonella
Ben Pile
Pietro Piumetti
Production Accountant
Shalonda Ware
Jeremy J. Bargiel
Jay Baker
Tara Whitaker
Spencer Laudiero
Mike Diederich
John Holmquist
Ian Wasseluk
Chris Mitchell
Chris Headrick
Alex Almaguer
Bill Flores
Original Music Composer
Drew Neumann
Gregory Hinde
Sound Director
Juli Murphy