Nat Faxon
Captain Underpants / Mr. Krupp (voice)
Acting
Jay Gragnani
Harold (voice)
Acting
Ramone Hamilton
George (voice)
Acting
Sean Astin
Narrator (voice)
Acting
Dayci Brookshire
Jessica / Dressy (voice)
Acting
Jim Cummings
Santa (voice)
Acting
Jorge Diaz
Melvin / Stanley Peet (voice)
Acting
Peter Hastings
Comic Narrator (voice)
Directing
Evan Kishiyama
Steve "Gooch" Yamaguchi (voice)
Acting
David Koechner
Mr. Meaner (voice)
Acting
Erica Luttrell
Erica / George's Mom (voice)
Acting
Patty Mattson
Miss Anthrope / Harold's Mom (voice)
Acting
Brennan Murray
Bo Hweemuth (voice)
Acting
Nolan North
Yule Tide / Lee Dingman / Movie Harold / Movie Santa (voice)
Acting
Kevin Michael Richardson
George's Dad / Movie George (voice)
Acting