Captain Underpants Mega Blissmas (2020)

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)

Brennan Murray

as Bo Hweemuth (voice)

Nolan North

as Yule Tide / Lee Dingman / Movie Harold / Movie Santa (voice)

Kevin Michael Richardson

as George's Dad / Movie George (voice)