Riven

Nat Faxon

as Captain Underpants / Mr. Krupp (voice)

Jay Gragnani

as Harold (voice)

Ramone Hamilton

as George (voice)

Sean Astin

as Narrator (voice)

Dayci Brookshire

as Jessica / Dressy (voice)

Jim Cummings

as Santa (voice)

Jorge Diaz

as Melvin / Stanley Peet (voice)

Peter Hastings

as Comic Narrator (voice)

Evan Kishiyama

as Steve "Gooch" Yamaguchi (voice)

David Koechner

as Mr. Meaner (voice)

Erica Luttrell

as Erica / George's Mom (voice)

Patty Mattson

as Miss Anthrope / Harold's Mom (voice)

Brennan Murray

as Bo Hweemuth (voice)

Nolan North

as Yule Tide / Lee Dingman / Movie Harold / Movie Santa (voice)

Kevin Michael Richardson

as George's Dad / Movie George (voice)

Dav Pilkey

Novel

Matt Smith

Writer

Mark Banker

Writer

Erik Kling

Director

Kevin Peaty

Director

Todd Grimes

Supervising Producer

Peter Hastings

Executive Producer

Ania O'Hare

Casting

Cymbre Walk

Casting

David Wiebe

Executive In Charge Of Production

Ashley Laidlaw

Line Producer

Fred Kron

Music

Jared Faber

Music

Grahaeme Cowie

Storyboard Artist

Derek Moore

Storyboard Artist

Andrew Murray

Storyboard Artist

Ian Young

Storyboard Artist