A handsome 17-year-old Shadowhunter known for his blond hair and wit, Jace grapples with personal revelations and his role within the Shadowhunter world while remaining fiercely dedicated to his allies.

A mortal with dark hair and glasses, Simon is an anime enthusiast and loyal friend to Clary, who bravely ventures into the Shadowhunter world despite the dangers it poses to someone with no magical abilities.

The novel's antagonist, Valentine is a persuasive, narcissistic figure with silver hair and black eyes, known for his authoritarian views and goals that threaten the safety and lives of many in the Shadowhunter universe.

A bookseller and werewolf leader with a fatherly presence, Luke exhibits deep loyalty and care for Clary, Simon, and their friends, balancing his roles between various supernatural communities.

The High Warlock of Brooklyn, Magnus is an ageless and powerful wizard with distinctive fashion and features, who assists the Shadowhunters while maintaining a relationship with Alec Lightwood.

A 16-year-old Shadowhunter with long black hair and a sharp wit, Isabelle is both stylish and fiercely protective, particularly of her adopted brother Jace and her family.

Eighteen-year-old Alec, the eldest of his immediate family, is a quiet and strategic Shadowhunter who values his family and must manage his feelings and secret relationship with Magnus.

A tall and strong-willed Shadowhunter with a complex past, Maryse leads the New York Institute while managing her family's delicate relationships and loyalties.

A 15-year-old werewolf and biracial character with curly hair and a curvy figure, Maia navigates personal trauma and bias, forming new relationships with Simon and her supernatural community.