Emily St. Aubert
The orphaned heroine, gifted with sympathy and imagination but repeatedly called upon to discipline fear with observation.
Monsieur St. Aubert
Emily's loving father, whose moral teaching and concealed family grief shape the mysteries she later resolves.
Valancourt
Emily's lover, a sensitive young soldier whose exposure to Parisian vice creates debts, error, and a painful misunderstanding.
Madame Cheron / Madame Montoni
Emily's vain, status-conscious aunt, whose marriage to Montoni makes both women vulnerable to his control.
Montoni
An Italian adventurer and bandit commander who uses marriage, confinement, armed force, and legal coercion to acquire wealth.
Count Morano
Emily's Venetian suitor, first encouraged and then betrayed by Montoni; he attempts to abduct her from Udolpho.
Annette
Madame Montoni's talkative maid and Emily's loyal companion, prone to turning rumor into supernatural certainty.
Ludovico
Annette's courageous lover, who aids Emily's escape and later exposes human agents behind a French haunting.
Monsieur Du Pont
A secret admirer of Emily, imprisoned at Udolpho, who joins her escape but accepts that she cannot return his love.
Count de Villefort
The honorable owner of Château-le-Blanc, whose advice initially separates Emily from Valancourt and later helps correct that error.
Lady Blanche
Villefort's generous daughter and Emily's friend, eventually married to St. Foix.
Signora Laurentini / Sister Agnes
A remorseful nun whose jealousy helped cause the Marchioness de Villeroi's murder and whose confession resolves the oldest mystery.
The Marchioness de Villeroi
St. Aubert's sister, murdered by her husband after Laurentini's manipulation and remembered in the haunted rooms of Château-le-Blanc.
Dorothée
An elderly servant devoted to the late Marchioness and keeper of Château-le-Blanc's memories.
