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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.
You can watch Underfist: Halloween Bash in United States through the following streaming services: .
You can watch Underfist: Halloween Bash in United States through the following streaming services: .
Overview
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.
Irwin / Hoss's Mom (voice)
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