Red-haired and stunningly beautiful, self-described “party girl” Bryce is half-human and half-Fae in origin. Her father is the Autumn King, the head of the Avallar Fae people, which makes her a Fae Princess. Bryce is also a Starborn princess, possessing the power of stars, a rare and powerful identity. Additionally, she has a magical artefact, the Horn of Luna, infused in her back as a tattoo, which gives her the ability to travel across worlds. Despite all these special abilities, Bryce maintains a casual and irreverent front. Many people tend to mistake her flippancy and vanity for a lack of purpose, mocking her for her love of nail polish and pleasure. However, as the narrative progresses, it becomes abundantly clear that Bryce is brave, empathetic, kindhearted, and loyal to a fault. She immerses herself in finding Emile because she cannot bear the thought of the orphaned human boy left alone in Midgard.

Bryce’s complex characterization embodies the novel's theme of appearance versus reality, and that heroes come in all forms. Bryce’s femininity and sexuality are an assertion of her rights as a woman in a world dominated by men.