| | | | Part I |
| 1 | Hedwig | Keiler-Mandl | A stage actress. Protagonist and Narrator. Aka: Hedy Lamarr. |
| | Josef | | A stage actor who played the role of Emperor Franz. |
| | Hans | Jaray | A stage actress who played the role of Empress Elizabeth. |
| | Adolf | Hitler | The Leader of the Nazi Party. Mr. Mandl's client. |
| | | | Theatre an der wien - A theatre where Hedy works. |
| 2 | Friedrich | Mandl | Hedy's husband. The richest man in Vienna. Aka: Fritz. |
| | Else | Lubbig | A veteran dresser in Theatre an der wien. |
| | Eva | May | A young German actress who commits suicide. |
| 3 | Josef | Hoffman | The architect of Hotel Imperial. |
| 4 | | | The Creditanstalt Bankverein - Prominent bank in Vienna. |
| | Franz V. | Hochstetten | An Aristocratic ritter. One of Hedy's suitors. |
| | Aribert | Mog | Hedy's co-actor. Hedy's suitor. |
| | Gertrude | Kiesler | Hedy's mother. Aka: Trude. |
| | Emil | Kiesler | Hedy's father. |
| | Engelbert | Dollfuss | A federal chancellor in Austria. |
| | Benito | Mussolini | Prime Minister of Italy. Mr. Mandl's associate. Aka: II Duce. |
| | Francisco | Franco | A former caudillo of Spain. A military dictator of Spain. |
| | | | Heimwehr- A paramilitary organization. |
| | Ernst Rudiger | Starhemberg | Head of Heimwehr. Mr. Mandl's friend and business colleague. |
| 6 | Wolf | Albach-Retty | One of Hedy's former admirers. |
| | Blucher | Von Wahlstaff | One of Hedy's former admirers. |
| 8 | Mrs. | Stein | One of Hedy's neighbors. |
| 10 | Gustav | | The Prince of Denmark. |
| | Albrecht | | The Prince of Bavaria. |
| | Nicholas | | The Prince of Greece. |
| | Kurt V. | Schuschnigg | A political leader. The new Austrian Chancellor. |
| | Max | Reinhardt | Hedy's theatre mentor. |
| 11 | Nicolo | Montello | One of the proprietors of Hotel Excelsior. |
| 13 | Ada | | The pretty parlormaid. |
| 14 | | | Schutzbund - The military arm of social democratic party. |
| | Otto | Baeur | The Jewish leader of Schutzbund. |
| 15 | Emil | Fey | Vice Chancellor of Austria. |
| 16 | | | Catholic Patriotic Front
- Party who took control of government. |
| 17 | Odon | Von Horvath | A renowned writer. |
| | Franz | Werfel | A renowned writer. |
| | Madame | Schiaparelli | A famous designer. |
| | Sigmund | Freud | A celebrated psychologist. |
| | Gustav | Machaty | Director won best director award in Venice Film Festival. |
| 18 | Ferdinand V. | Starhemberg | Prince Ernst's brother. Hedy's lover. |
| | Hellmuth | Walter | A German engineer. A Nazi torpedo expert. |
| | Dr. | Devitt | A doctor who lives in Dobling. Emil's doctor. |
| 20 | Scheneider | | The most senior servant of Mr. Mandl and Hedy. |
| 22 | Auguste | | The youngest servant of Hedy whom she trusts. |
| 25 | Laura | | Hedy's new maid. |
| | | | Part II |
| 26 | Margaret | Mayer | The head of MGM studio. Louis's wife. |
| | Louis | Mayer | The head and founder of MGM studio. Margaret's husband. |
| | Barbara | La Marr | A silent film star who died of heroin. |
| | Robert | Ritchie | An MGM talent scout. |
| | Benny | Thau | Mr. Mayer's assistant head. |
| | Howard | Strickling | Mr. Mayer's press representative. |
| 27 | Ilona | Massey | A Hungrian actress. Hedy's roommate. |
| | Reinhold | Schunzel | The MGM director. |
| | Charles | Boyer | A French actor. Hedy's leading man. |
| 28 | Susie | | Hedy's makeup artist. |
| | John | Cromwell | Hedy's director in her first movie with MGM. |
| | Irene | Gibbons | A costume designer in Theatre an der wien. |
| | James | Wong Howe | A cinematographer at MGM. |
| 29 | Otto | Preminger | A famous director. |
| | Walter | Wanger | A film producer. |
| | Reggier | Gardiner | An actor that Hedy dated. |
| 30 | President | Roosevelt | The current U.S. President. |
| 31 | Gene | Markey | A screenwriter. Hedy's new husband. |
| | Joan | Bennett | An actress. Gene's wife. |
| 32 | Donner | | Gene and Hedy's great dane. |
| | Apolonia | Nunez | Mexican civil magistrate. |
| | Gustavo | Padres Jr. | Mexican consul. One of Hedy and Gene's wedding witnesses. |
| | Raul | Mateus | Police department head. Hedy and Gene's wedding witness. |
| | Jimmy | Alvarez | Manager local tavern. Hedy
and Gene's wedding witness. |
| 33 | Peter | Lorre | Hedy's actor friend. |
| | Joseph | Schildkraut | Hedy's co-actor. |
| | Cecilia | Razovsky | The chair of the advisory committee to the secretary of labor. |
| | Frances | Perkins | A woman who works on the topic of legislation reform. |
| | Kate | Rosenheim | The head of Germany's department of Children's emigration. |
| 34 | Arthur | Hornblow Jr. | Hedy and Gene's close friend. |
| | Myrna | Loy | Hedy and Gene's close friend. |
| | James Lamarr | Markey | Hedy and Gene's adoptive son. Aka: Jamesie. |
| | Mrs. | Burton | Jamesie's nanny. |
| 36 | Robin | Gaynor-Adrian | Gilbert's son. |
| | Gilbert | Adrian | Robin's father. Hedy's friend. Aka: Adrian. |
| | Janey | Gaynor | An actress. Adrian's wife. |
| | George | Antheil | A well-known composer. Hedy's instrument co-inventor. |
| 39 | Boski | Antheil | George's wife. |
| | John | Howard | An actor Hedy dated. |
| | Jock | Whitney | A playboy Hedy dated. |
| | Howard | Hughes | A business tycoon Hedy dated. |
| 40 | King | Vidor | One of Hedy's film directors. |
| | Lawrence | Langner | A council member who supports Hedy and George's invention. |
| | Samuel | McKeown | A Caltech professor. |
| | | | Lyon & Lyon - A patent law firm. |
| | Charles | Kettering | The head of the National Inventor's Council. |
| 41 | Victor | Fleming | One of Hedy's film directors. |
| | George | Montgomery | Hedy's new boyfriend. |
| | Spencer | Tracy | Hedy's co-actor. |
| | John | Garfield | Hedy's co-actor. |
| 42 | William | Powell | Hedy's co-star. |
| | Blanche | | Hedy's housekeeper. |
| 43 | William | Bullitt | George's source. A journalist and a diplomat. |
| | Summer | Welles | Secretary of the state. President Roosevelt's favorite. |
| | L.B | Lent | Chief Engineer of the National Inventor's Council. |
| | Colonel | Smith | Assistant to the chief procurement officer of the Navy. |
| | Mr. | Robson | One of L.B. Lent's workers. |
| 44 | Eddie | Rhodes | A young sailor Hedy kissed in front of her audience. |
