Pro | Stefan | | A soldier. |
| | | Part One Paris, December 1918 |
1 | Walter | Rappaport | An industrialist. |
| Monsieur | Batteau | A bookshop owner. |
| Johann W. | von Goethe | A German writer and statesman. |
| Woodrow | Wilson | 28th U.S. President. |
| Marie | Antoinette | Queen of France. |
| Louis XVI | | King of France. |
| Margot | Rosenthal | Professor Rosenthal's daughter. |
| Signore | DiVincenzo | One of the Italian delegates. |
| Signore | Ricci | One of the Italian delegates. |
| Tante Celia | | Margot's aunt. |
| Archduke Franz | Ferdinand | The heir presumptive to the throne of Austria-Hungary. |
| Johan | Rantzau | German-Danish general and statesman. |
| Gunther | | Margot's dog. |
2 | Mrs. | Wilson | President Wilson's wife. |
| Stan | Stahl | American ambassador. |
| Gustav | Mahler | An Austro-Bohemian Romantic composer. |
| Krysia | Smok | A pianist from Poland. |
| Friedrich | Rosenthal | A professor and writer. |
| Marcin | | Krysia's husband. |
| Ignatz | Stein | The barman. |
| Deo | Modigliani | An artist. |
| Harold | Wilson | British Labor politician who served as Prime Minister of UK. |
| David Lloyd | George | Welsh statesman who served as Prime Minister of the UK. |
| Georges | Clémenceau | French statesman who served as Prime Minister of France. |
| Vittorio E. | Orlando | Italian statesman. The Italian leader to the Paris peace talks. |
| Vladimir | Lenin | Former Premier of the Soviet Union. |
3 | Lucy | | Margot's mother. |
| Helmut | | Margot's acquaintance. |
| Emilie | | Krysia's daughter. |
| | | Part Two Versailles, April 1919 |
4 | Elsa | Maxwell | American gossip columnist and author. |
| Georg | Richwalder | The military attaché to the delegation. |
5 | Peter | | Georg Richwalder's brother. |
| Alice | | Georg Richwalder's sister. |
7 | Leigh | Arrington | The daughter of a British viscount. |
| Frédéric | Chopin | Polish composer and virtuoso pianist of the Romantic era. |
| Rosa | Luxemburg | Polish Marxist, philosopher, economist, anti-war activist. |
| Herr | Mitten | A doctor. |
8 | Mildred | | A nurse. |
12 | Lieutenant | Bouvier | Georg Richwalder's acquaintance. |
14 | Greta | | A maid. |
| Oscar | Wilde | Irish poet and playwright. |
| Lucinda | Rose | An actress. |
| | | Part Three Berlin, August 1919 |
16 | Elsa | | A maid. |
19 | Charles | | The butler. |
| Noel | | Uncle Walter's aide. |