Irwin, Hoss Delgado, Jeff the Spider, Fred Fredburger, and General Skarr from the "Grim Adventures of Billy and Mandy" team up to fight an evil candy army from the Underworld on Halloween.
| Sound | Drew Neumann | Music |
| Art | Maxwell Atoms | Art Direction |
| Crew | Maxwell Atoms | Creator |
| Production | Maxwell Atoms | Executive Producer |
| Writing | Maxwell Atoms | Writer |
| Production | Jennifer Pelphrey | Supervising Producer |
| Editing | Illya Owens | Editor |
| Production | Shaun Cashman | Supervising Producer |
| Production | Brian A. Miller | Executive Producer |
| Production | James Silverman | Associate Producer |
| Directing | Shaun Cashman | Director |
| Production | Kris Zimmerman | Casting |
| Art | Maxwell Atoms | Storyboard Artist |
