Name	Known for
Frank Zappa Self (archive footage) Self (archive footage) See fewer	Baby Snakes (1979)
Cheech Marin Self Self See fewer	Born in East L.A. (1987)
Joe Travers Self Self See fewer	Roxy: The Movie (2015)
Ahmet Zappa Self Self See fewer	The Odd Life of Timothy Green (2012)
Terry Gilliam Self Self See fewer	Brazil (1985)
Matt Groening Self Self See fewer	The Simpsons (1989)
Ruth Underwood Self Self See fewer	200 Motels (1971)
David Fricke Self Self See fewer	The Compleat Beatles (1982)
Elliot Ingber Self Self See fewer	Easy Rider (1969)
Pamela Des Barres Self Self See fewer	Slaughter's Big Rip-Off (1973)
Carl Franzoni Self Self See fewer	Stupor Mundi: Livre 2, Les Hommes qui mangèrent la montagne (2016)
Vito Paulekas Self (archive footage) Self (archive footage) See fewer	The Girls on F Street (1966)
Mike Keneally Self Self See fewer	Sharp (2013)
Tom Wilson Self (archive footage) Self (archive footage) See fewer
Del Casher Self Self See fewer	Slave Girls from Beyond Infinity (1987)
Frank Zappa and the Mothers of Invention Themselves (archive footage) Themselves (archive footage) See fewer
Gail Zappa Self (archive footage) Self (archive footage) See fewer	Roxy: The Movie (2015)