Captain Underpants / Mr. Krupp (voice)
Harold (voice)
George (voice)
Narrator (voice)
Jessica / Dressy (voice)
Santa (voice)
Melvin / Stanley Peet (voice)
Comic Narrator (voice)
Steve 'Gooch' Yamaguchi (voice)
Mr. Meaner (voice)
Erica / George's Mom (voice)
Miss Anthrope / Harold's Mom (voice)
Bo Hweemuth (voice)
Yule Tide / Lee Dingman / Movie Harold / Movie Santa (voice)
George's Dad / Movie George (voice)
