Emjay Anthony as Max Engel

Adam Scott as Tom Engel

Toni Collette as Sarah Engel

Allison Tolman as Linda

David Koechner as Howard

Stefania LaVie Owen as Beth Engel

Conchata Ferrell as Aunt Dorothy

Luke Hawker as Krampus

Gideon Emery as Krampus (voice)

Ivy George as Cherub

Queenie Samuel as Jordan

Krista Stadler as Omi

Seth Green as Lumpy

Justin Roiland as Clumpy

Breehn Burns as Dumpy

Maverick Flack as Howie Jnr

Tess Jamieson-Karaha as Wasp Mother

Lolo Owen as Stevie

Leith Towers as Derek

Curtis Vowell as DHL Man

Sophie Gannon as Hero Dark Elf

Trevor Bau as Dark Elf

Felicity Hamill as Dark Elf

Gareth Ruck as Dark Elf

Chi Jiajia Lim as Extra (uncredited)