Dirección: Shaun Cashman
Irwin, Hoss Delgado, Jeff the Spider, Fred Fredburger y el general Skarr de "Grim Adventures of Billy and Mandy" se unen para luchar contra un malvado ejército de dulces del Inframundo en Halloween.
Grey DeLisle
Mandy / Aunt Sis / Kid / Ike (voice)
Greg Eagles
Grim / Sperg / Giant Candy Bar (voice)
Richard Steven Horvitz
Billy / Harold / Pumpkin / Trick-or-Treater Eater (voice)
Vanessa Marshall
Irwin / Hoss's Mom (voice)
Diedrich Bader
Hoss Delgado (voice)
Armin Shimerman
General Skarr / Candy Skeleton / Rat / Creepy Gnome (voice)
C.H. Greenblatt
Fred Fredburger (voice)
Maxwell Atoms
Jeff the Spider (voice)
Phil LaMarr
Dracula / Grandmama / Bougersnatch (voice)
Rachael MacFarlane
Mindy (voice)
Dave Wittenberg
Bun-Bun / Trick-or-Treater Eater #1 / Jimbo (voice)
Dan Gilvezan
Confic / Humicun (voice)
Greg Ellis
Perkins / Peanutbutter Wheel / Tiny Skull (voice)
Jess Harnell
Singer (voice)
Martin Jarvis
Nergal / Police Officer / Tarvis (voice)
Grey DeLisle
Mandy / Aunt Sis / Kid / Ike (voice)
Greg Eagles
Grim / Sperg / Giant Candy Bar (voice)
Richard Steven Horvitz
Billy / Harold / Pumpkin / Trick-or-Treater Eater (voice)
Vanessa Marshall
Irwin / Hoss's Mom (voice)
Diedrich Bader
Hoss Delgado (voice)
Armin Shimerman
General Skarr / Candy Skeleton / Rat / Creepy Gnome (voice)
C.H. Greenblatt
Fred Fredburger (voice)
Maxwell Atoms
Jeff the Spider (voice)
Phil LaMarr
Dracula / Grandmama / Bougersnatch (voice)
Rachael MacFarlane
Mindy (voice)
Dave Wittenberg
Bun-Bun / Trick-or-Treater Eater #1 / Jimbo (voice)
Dan Gilvezan
Confic / Humicun (voice)
Greg Ellis
Perkins / Peanutbutter Wheel / Tiny Skull (voice)
Jess Harnell
Singer (voice)
Martin Jarvis
Nergal / Police Officer / Tarvis (voice)
Grey DeLisle
Mandy / Aunt Sis / Kid / Ike (voice)
Greg Eagles
Grim / Sperg / Giant Candy Bar (voice)
Richard Steven Horvitz
Billy / Harold / Pumpkin / Trick-or-Treater Eater (voice)
Vanessa Marshall
Irwin / Hoss's Mom (voice)
Diedrich Bader
Hoss Delgado (voice)
Armin Shimerman
General Skarr / Candy Skeleton / Rat / Creepy Gnome (voice)
C.H. Greenblatt
Fred Fredburger (voice)
Maxwell Atoms
Jeff the Spider (voice)
Phil LaMarr
Dracula / Grandmama / Bougersnatch (voice)
Rachael MacFarlane
Mindy (voice)
Dave Wittenberg
Bun-Bun / Trick-or-Treater Eater #1 / Jimbo (voice)
Dan Gilvezan
Confic / Humicun (voice)
Greg Ellis
Perkins / Peanutbutter Wheel / Tiny Skull (voice)
Jess Harnell
Singer (voice)
Martin Jarvis
Nergal / Police Officer / Tarvis (voice)