An obscure author whose life is shrouded in mystery and whose works become the focus of Daniel's obsessive quest.

A corrupt police inspector with a violent streak and a personal vendetta, which entangles him with Julián Carax and those connected to his past.

Daniel's spirited love interest and the sister of his best friend, whose relationship with Daniel is central to his emotional journey.

Julián Carax’s childhood love and central figure in the past events that drive the novel’s mysteries.

A former friend of Julián Carax whose actions are pivotal in the events leading up to the novel's central conflict.

A wealthy and powerful businessman connected to Julián Carax’s past, playing a significant role in the mystery surrounding Julián’s life.

A resourceful and supportive friend to Daniel, providing assistance in his quest to learn about Julián Carax.

Daniel’s former best friend and Bea’s brother, whose family relationships are affected by the unfolding events.

One of Julián Carax’s close friends, whose actions are motivated by loyalty and love in the backdrop of the novel’s mysteries.

A woman with close ties to Julián Carax’s literary career, whose knowledge and secrets are crucial to unlocking his past.

The caretaker of the Cemetery of Forgotten Books, offering Daniel guidance in his quest related to Julián Carax’s books.

A young blind woman of beauty and grace, with whom the young Daniel is briefly infatuated.

Julián Carax’s father, whose early relationship with Julián is troubled and significant to Julián’s background.

A priest and former classmate of Julián Carax, who provides insights into Julián’s school life and friendships.

The devoted former governess to Penélope Aldaya, who offers Daniel key pieces of information related to the past.