Christmas gets weird - really weird - after George and Harold go back in time to change up a few of their beloved holiday's traditions.
Nat Faxon
as Captain Underpants / Mr. Krupp (voice)
Jay Gragnani
as Harold (voice)
Ramone Hamilton
as George (voice)
Sean Astin
as Narrator (voice)
Dayci Brookshire
as Jessica / Dressy (voice)
Jim Cummings
as Santa (voice)
Jorge Diaz
as Melvin / Stanley Peet (voice)
Peter Hastings
as Comic Narrator (voice)
Evan Kishiyama
as Steve "Gooch" Yamaguchi (voice)
David Koechner
as Mr. Meaner (voice)
Erica Luttrell
as Erica / George's Mom (voice)
Patty Mattson
as Miss Anthrope / Harold's Mom (voice)
