When the Boogey Man causes Grim to lose his powers, rank, and title in the Underworld Court for misusing his powers, he plots to seek out Horror's Hand and take over the world. It's up to Billy, Mandy, Irwin, and Grim to get to Horror's Hand before the Boogey Man does.
Richard Steven Horvitz
Grey DeLisle
Greg Eagles
Vanessa Marshall
Maxwell Atoms
George Ball
Jane Carr
Greg Ellis
Bart Flynn
C.H. Greenblatt
Jennifer Hale
Dorian Harewood
Phil LaMarr
Rachael MacFarlane
George Segal
Armin Shimerman
James Silverman
Lauren Tom
Billy West
Fred Willard