Riven

Mike Judge

as Beavis / Butt-Head (voice)

James Hetfield

as James Hetfield (voice)

Lars Ulrich

as Lars Ulrich (voice)

Kirk Hammett

as Kirk Hammett (voice)

Robert Trujillo

as Robert Trujillo (voice)

Bootsy Collins

as Bootsy Collins (voice)

Matt Stone

as Kyle Broflovski / Kenny McCormick (voice)

Brendon Small

as Nathan Explosion (voice)

Benji Webbe

as (voice)

Trey Parker

as Eric Cartman / Stan Marsh (voice)

Lemmy Kilmister

as Lemmy (voice)

Robert Trujillo

Writer

David Woo

Storyboard

Lauren Hecht

Assistant Editor

James Hetfield

Writer

Ben Kalina

Producer

Robert Trujillo

Creator

Barry J. Kelly

Editor

Konrad Piñon

Sound Re-Recording Mixer

Shannon Prynoski

Executive Producer

Juno John Lee

Storyboard

Juno John Lee

Director

Juno John Lee

Executive Producer

Antonio Canobbio

Art Direction

Chris Prynoski

Executive Producer

Antonio Canobbio

Executive Producer

Robert Trujillo

Executive Producer