Jack Nicholson

Character: Robert Eroica Dupea

Karen Black

Character: Rayette Dipesto

Susan Anspach

Character: Catherine Van Oost

Lois Smith

Character: Partita Dupea

Ralph Waite

Character: Carl Fidelio Dupea

Billy Green Bush

Character: Elton

Irene Dailey

Character: Samia Glavia

Toni Basil

Character: Terry Grouse

Lorna Thayer

Character: Waitress

Richard Stahl

Character: Recording Engineer

Helena Kallianiotes

Character: Palm Apodaca

William Challee

Character: Nicholas Dupea

John P. Ryan

Character: Spicer

Fannie Flagg

Character: Stoney

Marlena MacGuire

Character: Twinky

Sally Struthers

Character: Betty

Clay Greenbush

Character: Baby (uncredited)

Bob Rafelson

Character: Man in Elevator (uncredited)