Clary Fray is the main character in the young adult fantasy series, "The Mortal Instruments," written by Cassandra Clare. She is a teenage girl who discovers that she is a Shadowhunter, a human with angelic blood tasked with hunting demons. Clary's journey begins when she witnesses a murder in a nightclub and is drawn into a hidden world of magic and supernatural beings. Throughout the series, Clary learns about her family's secret past and her unique abilities, including the power to create new runes. She forms close relationships with other characters, such as Jace Wayland and Simon Lewis, as they navigate challenges and battles against dark forces.