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 Faxonas Captain Underpants / Mr. Krupp (voice)
Jay Gragnanias Harold (voice)
Ramone Hamiltonas George (voice)
Sean Astinas Narrator (voice)
Dayci Brookshireas Jessica / Dressy (voice)
Jim Cummingsas Santa (voice)
Jorge Diazas Melvin / Stanley Peet (voice)
Peter Hastingsas Comic Narrator (voice)
Evan Kishiyamaas Steve 'Gooch' Yamaguchi (voice)
David Koechneras Mr. Meaner (voice)