Capitão Cuecas e o Épico Interativo-O-Rama

Nat Faxon

as Captain Underpants / Mr. Krupp / Buffalobe (voice)

Jay Gragnani

as Harold Hutchins (voice)

Ramone Hamilton

as George Beard / Young Mr. Cleveland (voice)

Sean Astin

as Narrator / Putter Mulligan (voice)

Dayci Brookshire

as Jessica / Dressy / Smartaconda (voice)

Jorge Diaz

as Melvin / Stanley Peet (voice)

Todd Grimes

as Benjamin Franklin (voice)

Peter Hastings

as Comic Narrator / Marlin (voice)

Evan Kishiyama

as Steve 'Gooch' Yamaguchi (voice)

David Koechner

as Mr. Meaner (voice)

Phil LaMarr

as Mr. Cleveland / Viper Chai (voice)

Erica Luttrell

as Erica (voice)

Patty Mattson

as Miss Anthrope (voice)

Brennan Murray

as Bo Hweemuth (voice)

Nolan North

as Lee Dingman / Hugo Mouthingwad (voice)