Movie Cast (17)

• 

  Nat Faxon

  Captain Underpants / Mr. Krupp (voice)

• 

  Jay Gragnani

  Harold (voice)

• 

  Ramone Hamilton

  George (voice)

• 

  Sean Astin

  Narrator / Mr Gigglenose (voice)

• 

  Dayci Brookshire

  Jessica / Dressy (voice)

• 

  Clancy Brown

  Mr. Ree (voice)

• 

  Jorge Diaz

  Melvin / Stanley Peet / Melvin's Dad (voice)

• 

  Peter Hastings

  Comic Narrator (voice)

• 

  Evan Kishiyama

  Steve "Gooch" Yamaguchi (voice)

• 

  David Koechner

  Mr. Meaner (voice)

• 

  Erica Luttrell

  Erica / George's Mom (voice)

• 

  Patty Mattson

  Miss Anthrope / Harold's Mom (voice)

• 

  Brennan Murray

  Bo Hweemuth (voice)

• 

  Kevin Michael Richardson

  Diddlysaurus / George's Dad (voice)

• 

  Mindy Sterling

  Melvin's Mom (voice)

• 

  Stephen Tobolowsky

  Creepy Rattlechains (voice)

• 

  Kari Wahlgren

  Mayor Hoppy McChapper (voice)

Movie Crew (5)