Cast (5)
Nat Faxon
Captain Underpants / Mr. Krupp (voice)
Jay Gragnani
Harold (voice)
Ramone Hamilton
George (voice)
Sean Astin
Narrator (voice)
Peter Hastings
Comic Narrator (voice)
Nat Faxon
Captain Underpants / Mr. Krupp (voice)
Jay Gragnani
Harold (voice)
Ramone Hamilton
George (voice)
Sean Astin
Narrator (voice)
Peter Hastings
Comic Narrator (voice)
Crew (6)
Writing
Dav Pilkey
Novel
Production
Ashley Laidlaw
Line Producer
Peter Hastings
Executive Producer
Todd Grimes
Supervising Producer
Sound
Jared Faber
Music
Fred Kron
Music