Princess Snow is the enigmatic center of the novel's mystery, with her initial frailty concealing a complex and secretive personality driven by a mission to save her sister.

The primary antagonist, she is a reflection brought to life, motivated by her desire to escape her dependency on her original and achieve a true existence.

A guard who becomes Anja's close ally and love interest, known for his stoic demeanor and tactical mind that proves invaluable in navigating dangerous situations.

A talking mirror-cat who provides crucial guidance about the mirror-world's dangers, often through riddles and with a personal motive for vengeance.

A pragmatic king who defies expectations with his frankness and deep love for his daughter, influencing the events surrounding Snow's condition.

A mentor to Anja, living away from court politics, whose intuition about the mirrors proves accurate and supports the protagonists in their quest.

Snow's caregiver, involved in the mystery surrounding the royal family, burdened by guilt over her past decisions that inadvertently set tragic events in motion.

One of Anja's guards and a talkative foil to his partner Javier, known for his straightforward and conventional approach to protection.

Anja’s mentor, appearing in flashbacks, who instilled in her the love for empirical inquiry and questioning established knowledge.