Olivia Fray is Clary Fray's adopted sister, always hidden in the shadows and overpowered by her sister. On Clary's 18th birthday, she bumps into a boy, oblivious to the fact that her world would turn upside down. jace x oc x alec polyamorous relationship

"You're an angel in disguise Scarlett Forbes." "Eh. Not really in disguise per say." [ Shadowhunters Season 1 ] [OCxJace Wayland]

Echo Fairchild, older sister to Clary Fray, knows about the Shadow World. The day that Clary turns 18, is a day that she would never forget. Secrets get out and their world is about to change. Although there is something peculiar about Echo, she is different than that of a normal Shadowhunter. She was born in Idris but raised in the mundane world, but that won't stop her from transitioning into something nobody had suspected.