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.
Underfist: Halloween Bash was directed by Shaun Cashman.
Underfist: Halloween Bash runs for 1h 1min, and was released in 2008.
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