
| James Cagney | ... | Lon Chaney |
 | Dorothy Malone | ... | Cleva Creighton Chaney |
 | Jane Greer | ... | Hazel Bennett Chaney |
 | Marjorie Rambeau | ... | Gert a movie extra |
 | Jim Backus | ... | Clarence Locan |

| Robert Evans | ... | Irving Thalberg (as Robert J. Evans) |
 | Celia Lovsky | ... | Mrs. Chaney |
 | Jeanne Cagney | ... | Carrie Chaney |
 | Jack Albertson | ... | Dr. J. Wilson Shields |
 | Nolan Leary | ... | Pa Chaney |
 | Roger Smith | ... | Creighton Chaney at 21 |
 | Robert Lyden | ... | Creighton Chaney at 13 |
 | Rickie Sorensen | ... | Creighton Chaney at 8 |
 | Dennis Rush | ... | Creighton Chaney at 4 |
 | Simon Scott | ... | Carl Hastings |
 | Clarence Kolb | ... | Himself |
 | Danny Beck | ... | Max Dill |
 | Philip Van Zandt | ... | George Loane Tucker |
 | Hank Mann | ... | Comedy Waiter |
 | 'Snub' Pollard | ... | Comedy Waiter |
| rest of cast listed alphabetically: |
 | John Halloran | ... | Saloon Proprietor (scenes deleted) |
 | Natalie Masters | ... | Nurse (scenes deleted) |
 | Harry Antrim | ... | Cleva's Birth Doctor (uncredited) |

| Bobby Barber | ... | Miracle Man Extra (uncredited) |
 | Russ Bender | ... | Divorce Judge (uncredited) |
 | Marjorie Bennett | ... | Vera, Housekeeper (uncredited) |
 | June Blair | ... | Chorine (uncredited) |
 | Nicky Blair | ... | Cameraman of 'Unholhy Three' (uncredited) |
 | Larry J. Blake | ... | David T. Stone (uncredited) |
 | Harold Bostwick | ... | Piano Player (uncredited) |
 | Helen Brown | ... | Mrs. Heinley (uncredited) |
 | Robert Brubaker | ... | Jack Conway, Director of 'Unholy Three' (uncredited) |
 | John Bryant | ... | William R. Darrow Jr. (uncredited) |
 | Charles Cane | ... | Studio Guard (uncredited) |
 | Anna Lee Carroll | ... | Chorine (uncredited) |
 | Spencer Chan | ... | Chinese Extra in Bullpen (uncredited) |
 | Bill Chatham | ... | Shadow Dancer (uncredited) |
 | Jack Chefe | ... | Extra in Bullpen (uncredited) |
 | Heinie Conklin | ... | Audience Extra (uncredited) |
 | Billy Curtis | ... | Harry Earles, Midget Actor in 'The Unholy Three' scene (uncredited) |
 | Michael Dale | ... | Reporter at Chaney's House (uncredited) |

| Troy Donahue | ... | Assistant Director in Bullpen (uncredited) |
 | Helene Drake | ... | Script Supervisor, 'Laugh Clown Laugh' (uncredited) |
 | Steve Drexel | ... | Messenger Boy (uncredited) |
 | Richard Emory | ... | Assistant Director in Bullpen (uncredited) |
 | William Flaherty | ... | Assistant Director of 'Hunchback' (uncredited) |
 | Elizabeth Flournoy | ... | Thalberg's Secretary (uncredited) |
 | Evelyn Ford | ... | Chorine (uncredited) |
 | Clem Fuller | ... | Cowboy Extra in Bullpen (uncredited) |
 | John George | ... | Extra in Bullpen (uncredited) |
 | Jerry Hartleben | ... | Lon Chaney at 8 (uncredited) |
 | Charles Horvath | ... | Ivan Linow, Actor playing Hercules in 'Unholy Three' (uncredited) |
 | Robert F. Hoy | ... | Assistant Director in Bullpen (uncredited) |
 | William Hudson | ... | David Anderson, Reporter (uncredited) |
 | Dave Kashner | ... | Flogger of 'Hunchback' (uncredited) |
 | Tom Kennedy | ... | Audience at Eulogy (uncredited) |
 | Donald Kerr | ... | Don, a Stagehand (uncredited) |
 | Nancy Kilgas | ... | Mary Philbin in 'Phantom' (uncredited) |
 | Jess Kirkpatrick | ... | Police Lieutenant in Hospital (uncredited) |
 | Mike Lally | ... | Lighting Man of 'Unholy Three' (uncredited) |
 | Louise Lane | ... | Chorine (uncredited) |
 | Hugh Lawrence | ... | George Chaney (uncredited) |
 | Walter Lawrence | ... | Stagehand (uncredited) |
 | Herbert Lytton | ... | Emergency Room Doctor (uncredited) |
 | Della Malzahn | ... | Chorine (uncredited) |
 | George E. Mather | ... | Assistant Director in Bullpen (uncredited) |
 | Joe Merritt | ... | Assistant Director in Bullpen (uncredited) |
 | Ralph Montgomery | ... | Director in Bullpen (uncredited) |
 | Carol Morris | ... | Chorine (uncredited) |
 | Leo Needham | ... | John Chaney (uncredited) |
 | Eddie Parker | ... | Studio Guard (uncredited) |
 | Hank Patterson | ... | Scotty, Stage Door Man (uncredited) |
 | George Pembroke | ... | Mr. Tait (uncredited) |
 | George Peters | ... | Director of 'Hunchback' (uncredited) |
 | Foster H. Phinney | ... | Director of 'Phantom' (uncredited) |
 | Allen Pinson | ... | Reporter at Chaney's House (uncredited) |
 | Mike Portanova | ... | Assistant Director of 'Unholy Three' (uncredited) |
 | Paul Power | ... | Studio Executive (uncredited) |
 | George Ramsey | ... | Assistant Director (uncredited) |
 | James Seay | ... | Casting Director (uncredited) |
 | Cap Somers | ... | Extra in Bullpen (uncredited) |
 | Lelani Sorenson | ... | Carrie Chaney at 6 (uncredited) |
 | Robert Stevenson | ... | Policeman, 'Unholy Three' Set (uncredited) |
 | Jane Strangis | ... | Chorine (uncredited) |
 | Hal Taggart | ... | Chaney's Divorce Lawyer (uncredited) |
 | Forrest Taylor | ... | Miracle Man (uncredited) |
 | Ken Terrell | ... | Reporter at Chaney's House (uncredited) |
 | Jack Tesler | ... | Orchestra Leader (uncredited) |
 | Sammee Tong | ... | Chinese Extra (uncredited) |
 | Frances E. Williams | ... | Louisa, Cleva's Maid (uncredited) |
 | Harry Wilson | ... | Extra in Bullpen (uncredited) |
 | Annie Yip | ... | Chinese Extra in Bullpen (uncredited) |
Other reviewers have knocked the film because it is not historically accurate and I can't dispute that. But for me, James Cagney's performance makes this a film that is a must-see. True, the film is short on depicting Lon Chaney's film characters and although we do get to see Cagney in makeup as the Hunchback of Notre Dame and The Phantom of the Opera, the scenes are extremely brief. Most of the film depicts Chaney's conflict with his first wife, wonderfully played by the stunning Dorothy Malone - whew, what a knockout!- and the stormy relationship with his son.
The film is a soap opera but Cagney is wonderful showing that he can play drama, comedy and even dance and mime.