Billy & Mandy's Jacked-Up Halloween

Overview

Jack, a headless prankster from Grim's past, uses Billy to steal Grim's scythe so he can destroy Grim and take over the world with demons from the Netherworld.

Cast

Grey DeLisle

Mandy/Granny/Cowgirl (voice)

Greg Eagles

Grim/Spirit/Knight (voice)

Richard Steven Horvitz

Billy/Guy (voice)

Wayne Knight

Jack (voice)