
Underfist: Halloween Bash
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.
Top Billed Cast

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)
Featured Crew

Maxwell Atoms
Storyboard Artist
Brian A. Miller
Executive Producer

Maxwell Atoms
Art Direction
Shaun Cashman
Director
Illya Owens
Editor
James Silverman
Associate Producer

Maxwell Atoms
Writer

Maxwell Atoms
Executive Producer
Jennifer Pelphrey
Supervising Producer

Maxwell Atoms
Creator
Drew Neumann
Music
Shaun Cashman
Supervising Producer