Ewa Aulin character Candy Christian
Charles Aznavour character Hunchback juggler
Marlon Brando character Grindl
Richard Burton character MacPhisto
James Coburn character Dr. A.B. Krankheit
John Huston character Dr. Arnold Dunlap
Walter Matthau character Gen. R.A. Smight
Ringo Starr character Emmanuel
John Astin character T.M. Christian / Jack Christian
Elsa Martinelli character Livia
Sugar Ray Robinson character Zero
Anita Pallenberg character Nurse Bullock
Lea Padovani character Silvia Fontegliulo
Florinda Bolkan character Lolita
Marilù Tolo character Marquita
Micaela Pignatelli character Girl
Buck Henry character Mental Patient
Jill Banner character (uncredited)