Greg Eagles

Grim / Sperg (voice)

Richard Steven Horvitz

Billy (voice) (as Richard Horvitz)

Grey DeLisle

Mandy / Doll (voice)

Malcolm McDowell

Baron Von Ghoulish (voice)

Gilbert Gottfried

Santa Claus (voice)

Carol Kane

Mrs. Claus (voice)

Armin Shimerman

General Skarr (voice)

Dee Bradley Baker

Dad #2 / Man in Cave / Snow Monster / Bat Kid (voice)

Amber Hood

Cassie / Elf (voice)

Richard McGonagle

Male Parent / Man / Father Time (voice)

B.J. Ward

Female Parent / Mother Earth / Kid #2 (voice)