Fourth-grade friends George and Harold have a shared love of pranks and comic books -- and turning their principal into an undies-wearing superhero.

Nat Faxon

Captain Underpants / Mr. Krupp (voice)

Jay Gragnani

Harold (voice)

Ramone Hamilton

George (voice)

Sean Astin

Narrator (voice)

Peter Hastings

Comic Narrator (voice)

Jorge Diaz

Melvin (voice)

Dayci Brookshire

Jessica / Dressy (voice)

Evan Kishiyama

Steve 'Gooch' Yamaguchi (voice)

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