Voice
Seth Green
Skeletor
Dan Milano
Voice
Breckin Meyer
Various (voice)
Matthew Senreich
Krampus / Santa's Manager
Jason Alexander
Narrator
Jemaine Clement
Daphne Blake (voice) / Sarah Connor (voice) / Betty Crocker (voice)
Sarah Michelle Gellar
(voice)
Adrianne Palicki
Mrs. Claus
Madison Dylan
Little Boy / Bullied Kid / Himself
Macaulay Culkin
Voice
Tom Root
Abby Stevenson (voice) / Jenny Curran (voice) / Cortana (voice)
Nina Dobrev
Seuss Sister (voice) / Cheetara (voice) / Ramona (voice)
Hayden Panettiere
(voice)
Kyle Chandler
Barbie / Cinema Girl (voice) / Riley Andersen (voice)
Sydney Sweeney
Sun Baby / Marie 'Slim' Browning
Elizabeth Gillies
8-bit Woman (voice) / Student (voice)
Victoria Justice
Monopoly Daughter (voice) / Black Widow (voice)
Paris Berelc
Al yankovic / kevin / kaiju
'Weird Al' Yankovic
Herself / Mrs. Claus / hooker
Phyllis Diller
Mad scientist
David Lynch
Billy Joel
Zac Efron
Lois Lane
Emma Stone
Veronica Lodge
Scarlett Johansson
Talyn
Mae Whitman