When Melvin tries to cancel Halloween, clever best friends Harold and George create their own spooky holiday -- and it's a huge success!
as Captain Underpants / Mr. Krupp (voice)
as Harold (voice)
as George (voice)
as Narrator / Mr Gigglenose (voice)
as Jessica / Dressy (voice)
as Mr. Ree (voice)
as Melvin / Stanley Peet / Melvin's Dad (voice)
as Comic Narrator (voice)
as Steve 'Gooch' Yamaguchi (voice)
as Mr. Meaner (voice)
as Erica / George's Mom (voice)
as Miss Anthrope / Harold's Mom (voice)
as Bo Hweemuth (voice)
as Diddlysaurus / George's Dad (voice)
as Melvin's Mom (voice)
as Creepy Rattlechains (voice)
as Mayor Hoppy McChapper (voice)
