Val Kilmer. Val Kilmer was 29 in Gore Vidal's Billy the Kid as 'William Bonney'.
Andrew Bicknell. Andrew Bicknell was 32 in Gore Vidal's Billy the Kid as 'Tunstall'.
Wilford Brimley. Wilford Brimley was 54 in Gore Vidal's Billy the Kid as 'Gov. Lew Wallace'.
John O'Hurley. John O'Hurley was 34 in Gore Vidal's Billy the Kid as 'Dolan'.
Duncan Regehr. Duncan Regehr was 36 in Gore Vidal's Billy the Kid as 'Pat Garrett'.
Patrick Massett. Patrick Massett was 27 in Gore Vidal's Billy the Kid as 'Tom'.
Julie Carmen. Julie Carmen was 35 in Gore Vidal's Billy the Kid as 'Celsa'.
Burr Steers. Burr Steers was 23 in Gore Vidal's Billy the Kid as 'Billy Henchman'.
Gore Vidal. Gore Vidal was 63 in Gore Vidal's Billy the Kid as 'Preacher (uncredited)'.
William A. Graham. William A. Graham was 62 in Gore Vidal's Billy the Kid as 'Director'Gore Vidal. Gore Vidal was 63 in Gore Vidal's Billy the Kid as 'Writer'
Robert M. Sertner. Robert M. Sertner was 33 in Gore Vidal's Billy the Kid as 'Executive Producer'
Frank von Zerneck. Frank von Zerneck was 48 in Gore Vidal's Billy the Kid as 'Executive Producer'
Ned Vaughn