Diretor/a
Seung Woo Cha
DIRETOR/A
Erik Kling
Kevin Peaty
Elenco (na ordem dos créditos)
Nat Faxon
Captain Underpants
Jay Gragnani
Harold
Ramone Hamilton
George
Sean Astin
Narrator
Jorge Diaz
Melvin
Peter Hastings
Comic Narrator
Dayci Brookshire
Dressy
David Koechner
Mr. Meaner
Erica Luttrell
Erica
Secunda Wood
Moxie Swaggerman
Nolan North
Dr. Shifty Fitzgibbons
Evan Kishiyama
Steve 'Gooch' Yamaguchi
Gary Anthony Williams
Dupe Licitous
Brennan Murray
Bo Hweemuth
Laraine Newman
Elbrib
Patty Mattson
Miss Anthrope