 | Grey DeLisle als Mandy / Aunt Sis / Kid / Ike (voice) |
 | Greg Eagles als Grim / Sperg / Giant Candy Bar (voice) |
 | Richard Steven Horvitz als Billy / Harold / Pumpkin / Trick-or-Treater Eater (voice) |
 | Vanessa Marshall als Irwin / Hoss's Mom (voice) |
 | Diedrich Bader als Hoss Delgado (voice) |
 | Armin Shimerman als General Skarr / Candy Skeleton / Rat / Creepy Gnome (voice) |
 | C.H. Greenblatt als Fred Fredburger (voice) |
 | Maxwell Atoms als Jeff the Spider (voice) |
 | Phil LaMarr als Dracula / Grandmama / Bougersnatch (voice) |
 | Rachael MacFarlane als Mindy (voice) |
 | Dave Wittenberg als Bun-Bun / Trick-or-Treater Eater #1 / Jimbo (voice) |
 | Dan Gilvezan als Confic / Humicun (voice) |
 | Greg Ellis als Perkins / Peanutbutter Wheel / Tiny Skull (voice) |
 | Jess Harnell als Singer (voice) |
 | Martin Jarvis als Nergal / Police Officer / Tarvis (voice) |
| Shaun Cashman | Director |
| Maxwell Atoms | Creator |
| Shaun Cashman | Supervising Producer |
| Maxwell Atoms | Writer |
| Maxwell Atoms | Executive Producer |
| Brian A. Miller | Executive Producer |
| Jennifer Pelphrey | Supervising Producer |
| James Silverman | Associate Producer |
| Drew Neumann | Music |
| Illya Owens | Editor |
| Maxwell Atoms | Art Direction |
| Kris Zimmerman | Casting |
| Maxwell Atoms | Storyboard Artist |
