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

Barry J. Kelly

Editor

Robert Trujillo

Creator

Juno John Lee

Storyboard

Antonio Canobbio

Executive Producer

Juno John Lee

Director

James Hetfield

Writer

Juno John Lee

Executive Producer

Lauren Hecht

Assistant Editor

David Woo

Storyboard

Shannon Prynoski

Executive Producer

Konrad Piñon

Sound Re-Recording Mixer

Antonio Canobbio

Art Direction

Chris Prynoski

Executive Producer

Ben Kalina

Producer

Robert Trujillo

Executive Producer