Clarissa Fray or usually called Clary is the center character of this movie. She is Jocelyn Fray's daughter, who later known that her father is Valentine. Clary was born in human world due to her mother escaping attempt. This situation causes Clary does not know who she is. Moreover, her mother asks a warlock, Magnus Bane, to hide Clary's memory about the Shadow world. Clary grows up as a mundi girl and becomes a best friend for Simon.

After her mother abduction, she begins an adventure and reveals her true self pieces by pieces. She finally knows that she is a Shadowhunter because her parents were Shadowhunters too. Clary has a special power as a Shadowhunter as her mother's which using runes too hide and take things from pictures. She falls in love with Jace who in the end of the story is revealed as her own brother.