| Term | Definition |
| Sir Percy Blakeney | The ignorant, annoying---yet very rich---fop who is distant from his wife after learning she was involved in an execution. |
| Lady Marguerite Blakeney | She was raised a plebeian actress in France, and after seeing her brother beaten by an aristocrat family, sought revenge that got out of hand and ended in the family's execution. She married Percy because she was enamored with his adoration of her, and because he had a fortune, hoping she would someday love him, too. |
| Armand St. Just | The brother of Marguerite who was beaten after writing a love note to the daughter of an aristocrat. He is later endangered after being disovered as a member of the Scarlet Pimpernel's league. |
| Scarlet Pimpernel | The anonymous hero who cleverly rescues French aristocrats from the revolutionaries. |
| guillotine | The primary weapon used to execute French aristocrats. |
| Chauvelin | An adamant revolutionist who seeks to take down the Scarlet Pimpernel. He is old friends with Marguerite and wishes to use her influence to accomplish his ends. |
| Pere Blanchard's Hut | The place where Chauvelin intends to intercept the Pimpernel and the aristocrats he is hiding. |
| Marquis de St. Cyr | The aristocratic family that Marguerite accidentally has sent to the guillotine as recompense for their maltreatment of her brother, Armand. |
| Day Dream | Sir Percy's boat |
| The Fisherman's Rest | The tavern and inn owned by Mr. Jellyband and Sally, and the place where the story opens. |
| Sir Andrew Ffoulkes | The admirer of Suzanne de Tournay, a recently-escaped French aristocrat, and a member of the Pimpernel's league. Marguerite tricks him and reads a note from the Scarlet Pimpernel that she hopes to pass on to Chauvelin. |
| Lord Grenville | The host of the ball where Marguerite hopes to uncover information about the Scarlet Pimpernel for Chauvelin. |
| de Tournay | The French aristocratic family that the Pimpernel recently aided to London at the beginning of the story. The mother has a severe prejudice against Marguerite. |