Helen is the daughter of the late physician Gerard de Narbon and a ward of the Countess of Rossillion. As a commoner, she secretly harbors a seemingly hopeless romance with the high-born Bertram. She is highly resourceful and deeply determined. She concocts a risky plan to travel to Paris and cure the King's illness using her father's remedies to elevate her social standing.

Bertram is the newly minted Count of Rossillion. Proud of his noble heritage, he feels stifled by his youth and desires to seek honor in the Florentine wars rather than stay at court. He views matters of love and status with a rigid sense of aristocratic entitlement.

The Countess is a wealthy widow who oversees the Rossillion estate following her husband's death. She is highly perceptive and acts as a protective figure to her ward, Helen. Rather than enforcing strict class boundaries, she sympathizes with young love and supports those she cares about.

The King of France is a powerful ruler suffering from a severe illness called a fistula. He holds absolute authority over his subjects, maintaining the power to arrange marriages and grant titles. He frequently reflects on his past, and he views the younger generation as lacking the honor of their predecessors.

Parolles is a soldier serving under Bertram who frequently accompanies the young count. He speaks with grand, boastful language to present himself as a courageous warrior, though others suspect him of cowardice. He encourages rebellious instincts and offers transactional views on women.

Lafew is an older French lord who serves as a loyal associate to the Countess and her family. He acts as a voice of reason and is quick to identify boastful or dishonest behavior in younger men.

Lavache is the clown employed by the Countess of Rossillion. He engages in witty wordplay about marriage, human nature, and society. He frequently tests the limits of his employer's patience while delivering messages.

Diana is the unmarried daughter of a Florentine widow. Though she comes from a financially poor family, she is of noble birth and holds her personal honor in high regard. She attracts the attention of soldiers stationed in her city.

The Widow of Florence is an older gentlewoman who runs a lodging house for pilgrims. She is protective of her daughter's reputation in the face of visiting soldiers. She maintains her family's pride despite their poverty.

Mariana is a neighbor to the Widow of Florence and Diana. She offers warnings to the young women about the manipulative nature of men. She specifically cautions them against the advances of soldiers.

Gerard de Narbon is Helen's deceased father. He was a highly respected physician whose reputation extended to the King's court. He leaves behind a legacy that influences the current events.

Isbel is a woman associated with the Rossillion estate. She is the subject of Lavache's romantic and marital ambitions. She remains off-stage during the early events.