Mandy/Madroid/Milkshakes

Grey DeLisle

Billy / Billybot / Harold / Pale Ghoulish Juror / Chippy the Squirrel (voice) (as Richard Horvitz)

Richard Steven Horvitz

Grim/Sperg/Pirate No. 6

Greg Eagles

Irwin/Pirate No. 5/Unicorn

Vanessa Marshall

I'll Cut You Guy / Pirate #2 / Horrorbot / Burnt Skeleton Guard (voice)

Maxwell Atoms

Peequay

George Ball

I'll Cut You Guy/Pirate No. 2/Horrorbot

Maxwell Atoms

Creeper

Greg Ellis

Bride of Frankenstein

Jane Carr

Giant Cyclops

Bart Flynn

Fred Fredburger

C. H. Greenblatt

Judge Roy Spleen

Phil LaMarr

Horror

George Segal

Fred Fredburger / Pirate #4 (voice)

C.H. Greenblatt

Billy's Mom (voice)

Jennifer Hale

Boogey Man

Fred Willard

General Skarr

Armin Shimerman

Older Irwin (voice)

Dorian Harewood

Miniature Cyclops

Billy West*

2 Headed Parrot (voice)

Rachael MacFarlane

Executioner / Pirate #1 (voice)

James Silverman

Numbuh Three (voice)

Lauren Tom

Pirate #8 / Miniature Cyclops / Spider Clown Mailman / Beast Master (voice)

Billy West

Director

Russell Calabrese

Director

Robert Alvarez

Director

Shaun Cashman

Director

Mike Lyman

Director

Russell Calabrase

Director

Phil Cummings

Director

Matt Engstrom

Director

Eddy Houchins

Director

Gordon Kent

Director

Christine Kolosov

Director

Sue Perrotto

Director

Kris Sherwood

Director

Juli Hashiguchi

Director

Michel Lyman

Director

Juli Murphy