Don Preston

Self (AKA Dom DeWilde) / Biff Debris / Uncle Meat

Frank Zappa

Self / The Imaginary Director

Phyllis Smith Altenhaus

Self / Sheba Flieschman (as Phyllis Altenhaus)

Dick Barber

Self

Massimo Bassoli

Adult Minnesota Tishman

Rodney Bingenheimer

Self

Jimmy Carl Black

Self

Aynsley Dunbar

Self / Biff Junior

Roy Estrada

Self

Francesca Fisher

The Countess

Bunk Gardner

Self

Buzz Gardner

Self

Lowell George

Self

Dick Kunc

Self

Manfred Lerch

Self

Frank Zappa