Christine is a young soprano at the Paris Opera who suddenly displays remarkable vocal talent after years of being an average chorus singer. Following the death of her beloved violinist father, she loses her passion for music until a mysterious disembodied voice begins giving her private lessons. She is gentle, superstitious, and highly impressionable, leading her to trust the unusual circumstances of her vocal instruction.

Erik is a mysterious, masked figure who secretly occupies the Paris Opera House. He possesses extraordinary talents in ventriloquism and illusion, using these skills to extort money from the theater managers and maintain a firm hold over the superstitious performers. He communicates his demands through threatening letters written in red ink.

Raoul is a wealthy, twenty-one-year-old nobleman who holds a deep infatuation for Christine Daaé. He reconnects with her at the Opera but grows intensely jealous when he overhears another man speaking in her dressing room. Having lived a sheltered life, he struggles to manage his emotionally volatile reactions to Christine's new secretive attitude.

Philippe is the older brother of Raoul and the head of the Chagny family. He acts as Raoul's guardian, indulging his younger sibling while remaining fiercely protective of their family's social reputation. He views chorus girls as suitable for brief flings rather than serious matches, putting him at direct odds with Raoul's earnest devotion.

Armand is one of the two new managers of the Paris Opera. He arrives at his post completely unbothered by the superstitious rumors circulating among the staff. As a staunch skeptic, he firmly believes the extortion letters arriving at his desk are part of an elaborate practical joke orchestrated by his predecessors.

Firmin serves as the co-manager of the Paris Opera alongside Armand Moncharmin. Possessing a rash temper, he quickly loses patience with the staff's constant chatter about supernatural events. He ignores the strange extortion demands out of a stubborn refusal to be blackmailed, approaching the strange occurrences with rigid rationality.

Mme. Giry is the humble but prideful box-keeper at the Paris Opera. She interacts frequently with a hidden theater occupant, carrying out specific instructions in exchange for generous tips. Her unwavering belief in supernatural forces frequently places her in direct conflict with the highly skeptical new managers.

Meg is a young, impressionable dancer in the Opera's corps de ballet. Like many of her peers, she is deeply superstitious and quick to attribute any misfortune or strange occurrence in the theater to supernatural forces.

The Persian is a shadowy, observant man who frequents the Opera House wearing an astrakhan hat. As a retired chief of police from Mazenderan, he possesses prior knowledge of theater secrets and silently watches over the unfolding chaos. He relies on logic and experience rather than falling prey to the superstitions that paralyze the theater staff.

Carlotta is the celebrated Spanish star soprano of the Paris Opera. She is an archetypal diva. She is vain, stubborn, and highly protective of her leading status. She routinely dismisses warnings and threats, believing them to be ploys to replace her with younger talent.

Debienne is one of the retiring managers of the Paris Opera. Exhausted and terrified by the constant, tyrannical demands he receives in the mail, he gladly hands over the reins of the theater to his highly skeptical successors.

Poligny is the superstitious co-manager of the Opera who is stepping down from his post. Having personally experienced a disembodied voice in Box Five, he lives in fear and eagerly escapes the theater to avoid further extortion.

The Narrator is an investigative journalist examining thirty-year-old incidents at the Paris Opera. He pieces together various interviews, historical documents, and police reports to uncover the truth behind the theater's darkest rumors. He operates as a voice of reason, sorting through superstitious claims to find factual evidence.

Joseph is the chief sceneshifter at the Paris Opera. He claims to have seen a corpse-like face in the cellars, a sighting that precedes his sudden, mysterious death by hanging early in the story.

Jammes is a young dancer in the Opera's corps de ballet. Highly superstitious, she constantly fears the wrath of unseen entities and relies on trinkets and charms to ward off bad luck in the theater.

La Sorelli is the principal ballerina of the Paris Opera. While preparing for the gala, she is constantly interrupted by the younger dancers' frantic stories, though she harbors her own superstitious fears about the theater.

Mamma Valérius is an elderly woman and the widow of a professor. She serves as Christine Daaé's guardian and deeply believes in the heavenly nature of the vocal tutoring her ward receives. She offers a comforting presence for Christine away from the tense environment of the theater.