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.
Grey DeLisle
Mandy/Granny/Cowgirl (voice)
Greg Eagles
Grim/Spirit/Knight (voice)
Richard Steven Horvitz
Billy/Guy (voice)
Wayne Knight
Jack (voice)
Vanessa Marshall
Irwin/Toilet Paper Woman (voice)
Billy West
Giant Pumpkin/Lumber Jack/Announcer/Cell Phone Guy (voice)
