The Spooky Tale of Captain Underpants Hack-a-ween

01 Nat Faxon as Captain Underpants / Mr. Krupp (voice) 02 Jay Gragnani as Harold (voice) 03 Ramone Hamilton as George (voice) 04 Sean Astin as Narrator / Mr Gigglenose (voice) 05 Dayci Brookshire as Jessica / Dressy (voice) 06 Clancy Brown as Mr. Ree (voice) 07 Jorge Diaz as Melvin / Stanley Peet / Melvin's Dad (voice) 08 Peter Hastings as Comic Narrator (voice) 09 Evan Kishiyama as Steve 'Gooch' Yamaguchi (voice) 10 David Koechner as Mr. Meaner (voice) 11 Erica Luttrell as Erica / George's Mom (voice) 12 Patty Mattson as Miss Anthrope / Harold's Mom (voice)