Mare's main love interest, Cal is a Silver struggling with betrayal from his brother Maven. Throughout the story, he allies with the newbloods and seeks redemption amidst personal turmoil.

Mare's childhood friend who grapples with his changing feelings toward her. Initially distant, he comes to accept Mare's place as a leader and supports her efforts.

Mare's brother, a newblood with teleportation abilities that aid their cause. His quick actions often save the group from danger.

The main antagonist, who has betrayed Mare and Cal, leaving a lasting impact on them. Maven's actions and intentions hover over the narrative even with limited appearances.

A captain of the Scarlet Guard without powers, Farley is a formidable fighter. She becomes an essential ally in Mare's quest and navigates personal loss with resilience.

A newblood from a factory town, Cameron has a strong personality and a powerful ability she learns to control. Her dynamic with Mare is marked by their similarities and conflicts.

A newblood who can see the future, Jon's insights into shifting destinies influence key moments. His ability plays a crucial role in the plot's progression.

Farley's father and a leader who embodies the old ways of the Scarlet Guard. His interactions with Mare and Cal highlight the tension between traditional and evolving approaches in their fight for change.