Fabrizio is a restless, imaginative young nobleman who initially seeks glory by running away at age 16 to join Napoleon's army. Disillusioned by the chaotic reality of warfare, he enters the clergy at his aunt's urging, donning the purple stockings of a Monsignore. He possesses a calm, deeply internal confidence derived from Renaissance chronicles of his ancestors, making him somewhat detached from the 19th-century political anxieties surrounding him. He relies heavily on the interpretation of omens to guide his chaotic life on the run.

Gina is Fabrizio's passionately devoted aunt and the brilliant social centerpiece of the Parmean court. To secure her safety and social standing, she frequently leverages her beauty and intelligence, making herself indispensable to the powerful men around her. She orchestrates complex schemes to protect her nephew from the constant political threats leveled against him.

Count Mosca serves as the Minister of Police in the highly conservative state of Parma. Wearing a powdered wig to signify his allegiance to the old regime, he views political life as an elaborate, high-stakes game. He executes severe state orders with pragmatic detachment but completely loses his composure when his jealousy over Gina is triggered.

Clélia is the deeply reserved, highly principled daughter of the keeper of the Farnese Tower. She deliberately isolates herself from the boastful displays of her father's bourgeois circle, blocking the view from her high apartments with orange trees. Her internal life is governed by a strict moral code and profound religious vows, putting her in direct conflict with her growing feelings for a prisoner.

The Prince is the absolute monarch of Parma, maintaining his grip on power through fear and the harsh punishment of political dissidents. He harbors a deep-seated inferiority complex regarding the Milanese nobility, which makes him highly volatile. His fragile ego drives him to seek total control over the women and ministers in his court.

Rassi is a bourgeois legal official devoid of personal honor or humor. He willingly executes the Prince's most tyrannical orders, functioning as the brutal instrument of the monarchy's vengeance. His ultimate ambition is to be elevated to the nobility, a desire that dictates his shifting allegiances.

Fabio Conti serves as the keeper of the famed Parmean Citadel. He is a boastful, deeply insecure man of bourgeois origins who attempts to mask his social anxieties with cruelty toward his prisoners. He commissions elaborate architectural additions to the prison to demonstrate his absolute control over the inmates.

The Marchesa is a capable and highly vindictive noblewoman who operates as the primary political opposition to Mosca's regime. She uses forgery, espionage, and strategic alliances to exact revenge against Gina and systematically dismantle her rivals' influence over the Prince.

Ferrante is a destitute poet and radical republican who lives in hiding in the woods. He survives by robbing travelers but maintains a strict ideological devotion to the overthrow of monarchies. He channels his fierce revolutionary energy into a profound, self-sacrificing devotion to Gina.

The Abbé is an eccentric clergyman who prefers reading the stars from his belfry over delivering traditional theological instruction. He instills in young Fabrizio a deep fascination with astrology and omens, delivering prophecies regarding the boy's turbulent future.

Fabrizio's official father is a rigid, deeply conservative nobleman who fervently supports the Austrian Empire. He detests the encroaching influence of the Napoleonic era and ultimately alienates his son through his cold, calculating political zeal.

The Marchesa is Fabrizio's mother, a gentle noblewoman who quietly rejects her husband's austere conservatism. She shares "transports of tenderness" with her youngest son and covertly supports his early efforts to find his place in the world.

Ludovic is a devoted former coachman and an aspiring poet of peasant origin. He routinely risks his own life to facilitate Fabrizio's escapes across borders, demonstrating an uncomplicated, steadfast loyalty that deeply moves his aristocratic employers.

The Archbishop is a petit-bourgeois clergyman easily dazzled by the presence of high nobility. Despite holding significant religious authority in Parma, his deep-seated class insecurity renders him submissive to anyone possessing an impressive aristocratic title.

Marietta is a traveling actress who captures Fabrizio's passing interest. Her association with the young nobleman inadvertently places her at the center of a severe, life-altering confrontation on the road.

Giletti is a volatile, lower-class theater player. Harboring intense jealousy over Marietta's interactions with Fabrizio, his insecurity and aggression quickly escalate into a dangerous physical altercation.

The Marchese is a tremendously wealthy courtier who uses his vast financial resources to secure social prominence. He believes his riches make him entirely invulnerable to the shifting political tides of Parma.