Candy Christian

Ewa Aulin

Hunchback juggler

Charles Aznavour

Grindl

Marlon Brando

MacPhisto

Richard Burton

Dr. A.B. Krankheit

James Coburn

Dr. Arnold Dunlap

John Huston

Gen. R.A. Smight

Walter Matthau

Emmanuel

Ringo Starr

T.M. Christian/Jack Christian

John Astin

Livia

Elsa Martinelli

Zero

Sugar Ray Robinson

Nurse Bullock

Anita Pallenberg

Silvia Fontegliulo

Lea Padovani

Lolita

Florinda Bolkan

Conchita

Marilu Tolo

Conchita

Marilù Tolo

Police sergeant

Fabian Dean

The Big Guy

Umberto Orsini

Marquita

Nicoletta Machiavelli

Jonathan J. John

Enrico Maria Salerno

Cop

Joey Forman

Harold

Neal Noorlag

Al Pappone

Enzo Fiermonte

Luther

Peter Dane

Miss Quinby

Peggy Nathan

Mobster

Anthony Foutz

Mobster

Tom Keyes

Dr. Harris

Mark Salvage

Girl

Micaela Pignatelli

Film Director (uncredited)

Christian Marquand

Mental Patient (uncredited)

Buck Henry

Woman (uncredited)

Judith Malina

Hippie (uncredited)

Julian Beck

Max (uncredited)

Romano Targa

Extra

Susan Bottomly