A confident and skilled Shadowhunter who becomes one of Clary's love interests and grapples with hidden self-doubt.

Clary's best friend and the "boy next door," who feels out of place among the Shadowhunters but proves his worth through quick thinking.

A tall and striking Shadowhunter who uses her beauty and confidence skillfully, but learns to see Clary as an ally rather than a rival.

Isabelle's brother and Jace's best friend, who struggles with acceptance in Shadowhunter society and his abilities in combat.

The antagonist with extremist views on Shadowhunter superiority, whose past actions heavily influence the story.

An immortal warlock who uses his magical talents to assist Clary and the Shadowhunters, possessing a unique warlock mark.

The tutor at the New York Institute who desires freedom from a curse and unintentionally causes harm in pursuit of that goal.

A former Shadowhunter turned werewolf who looks out for Clary and her mother, protecting them from various dangers.

A human neighbor familiar with the Shadow world, tasked with safeguarding a crucial artifact.

A Silent Brother residing in the City of Bones, wielding significant power and knowledge within Shadowhunter society.

Clary's mother, whose history with Valentine influences her protective actions toward Clary and their connection to the Shadow world.