• 
  Mike Tyson

  el însuși
• 
  Liev Schreiber

   Himself - Narrator (2 episodes, 2003)
• 
  Evander Holyfield

   Himself (1 episode, 2003)
• 
  Sugar Ray Leonard

   Himself (3 episodes, 2003)
• 
  Alexis Arguello

   Himself (1 episode, 2003)
• 
  Ron Borges

   Himself (3 episodes, 2003-2013)
• 
  Gerry Cooney

   Himself (1 episode, 2003)
• 
  Oscar De La Hoya

   Himself (1 episode, 2003)

• 
  George Foreman

   Himself (1 episode, 2003)
• 
  Marvelous Marvin Hagler

   Himself (2 episodes, 2003)
• 
  Larry Holmes

   Himself (1 episode, 2003)
• 
  Jim Lampley

   Host / ... (3 episodes, 2003-2013)
• 
  Lennox Lewis

   Himself (1 episode, 2003)
• 
  Larry Merchant

   Himself (3 episodes, 2003-2013)
• 
  James 'Buster' Douglas

   Himself (1 episode, 2003)

• 
  Thomas Hearns

   Himself (2 episodes, 2003)
• 
  Riddick Bowe

   Himself (2 episodes, 2003)
• 
  Michael Moorer

   Himself (1 episode, 2003)
• 
  Felix Trinidad

   Himself (1 episode, 2003)
• 
  Andrzej Golota

   Himself (1 episode, 2003)
• 
  Aaron Pryor

   Himself (1 episode, 2003)
• 
  Rock Newman

   Himself (2 episodes, 2003)