Emma is a Shadowhunter that has lived her entire life in The Los Angeles Institute. Emma's parents were killed in City of Glass. She was forced to live at the Los Angeles Institute. She is determined to hunt down those responsible for killing her parents, Demons. She has become the fastest, fiercest, most determined Shadowhunter since Jace Lightwood. She is set to be the main protagonist in the upcoming The Dark Artifices series.

Julian Blackthorn is Emma's closest companion and Parabatai. Throughout the course of the series, she falls in love with him. However, she is forbidden to be with him by Shadowhunter law.