- Muhammad Ali - Himself (as Cassius Clay)
- Lou Gilbert - Dr. Gilbert
- Michael Conrad - Ma Greeny's Thug
- Rory Calhoun - Himself
- Steve Belloise - Hotel Desk Clerk
- Al Bain - Police Officer (uncredited)
- William Calhoun - Self - Rivera's wrestling opponent (uncredited)
- Nancy Cushman - Woman on Elevator (uncredited)
- Sig Frohlich - Diner Patron (uncredited)
- John Indrisano - Barfly Watching TV (uncredited)
- Arthur M. Mercante - Referee (uncredited)
- Angelo Rossitto - Midget Wrestler Outside Wrestling Ring (uncredited)
- David Susskind - Self - Trailor Narrator (uncredited)
- Ralph Nelson
- Rod Serling
- David Susskind
- David Golden
- Laurence Rosenthal
Capítulo disponible en las siguientes plataformas: