"Emperor Jones" is a play written by Eugene O'Neill. The main character is Brutus Jones, an African American man who was a Pullman porter and a convict before becoming the self-proclaimed emperor of a Caribbean island. Other characters in the play include:

1. Smithers - a white trader who initially helps Jones establish his rule but later turns against him.
2. Jeff - a native of the island who serves as Jones' guide and assistant.
3. Lem - a former convict who becomes one of Jones' followers.
4. Undetermined number of natives - who are oppressed by Jones' rule and eventually rebel against him.