Ghost is 13 years old and lives with her grandmother Barbara. Not much is known about Ghost's earlier life, including how she came to live with her and what happened to her parents. She lives with her grandmother Barbara. The origin of her name "Ghost" is a nickname given by Barbara because she made sudden noises when moving around.
At some point, Ghost burns Barbara alive but doesn't kill her. Barbara is taken into long term care at the Happier Times Care Center, and since Ghost had no other guardians, she was put into care with Barbara. She befriends a clinic worker named Tyler, but is ostracized by the girls at the clinic for her odd behaviors. She cares for a dog named Rocky.
When Brigitte Fitzgerald, sister of the late Ginger Fitzgerald, is taken to the clinic after her Monkshood, a werewolf "cure" (which turns out to be temporary) is mistaken for a drug. One of the first people she meets is Ghost, who follows Brigitte curious about why she is so secretive. She soon realizes Brigitte is a werewolf and that the "drugs" she has been taking were used to treat it. As a friendly gesture, she tries to steal samples of the Monkshood but is stopped by Tyler.
As it happens, a male werewolf is stalking Brigitte, with intentions of mating with her. The werewolf has found its way to the clinic. After the beast kills Rocky and Ghost finds the body, she accuses Brigitte who is desperately avoiding the werewolf. Ghost offers to Brigitte flee the clinic if she comes with her. Brigitte agrees and follows a trail of stickers left by Ghost through the ventilation shafts and meets her in the clinic's basement (where the werewolf was hiding). Ghost and Brigitte run through the darkness trying to avoid the werewolf and find a way out through the disused crematorium. Ghost saves Brigitte from being raped by the werewolf by distracting it long enough for them to flee.
They take refuge in Barbara's cabin, where Ghost and Brigitte grow a close sister-like bond. Ghost tells Brigitte that Barbara caught on fire while smoking. Days after the escape, Brigitte runs out of Monkshood and she and Ghost meet with Tyler, who still holds the samples. That night, while Brigitte is in her earlier stages of transformation, her body rejects the Monkshood. Ghost makes it look like Tyler raped her and, in retaliation, Brigitte tricks Tyler into going outside where he is attacked by the male werewolf. Upon this realization, Brigitte and Ghost decide to kill the werewolf once and for all and set up a death trap in Ghost's basement. As they are doing this, Alice, the director of the rehab clinic, comes to claim Ghost. During an argument between the two, Brigitte finds out that Ghost has lied to her about the cause of Barbara's injury. After Ghost's true nature is revealed, Brigitte confronts her. During the commotion, the werewolf finally breaks into the cabin. A fight ensues and the werewolf is killed when he and Brigitte fall into the basement. Ghost kills Alice while Brigitte survives the fall. Brigitte, weak from the fight and in an extremely advanced stage in her transformation, climbs up the steps, begging Ghost to kill her. Instead, Ghost cruelly locks Brigitte in the darkness of the basement, intending on making Brigitte her pet.
Ghost declares the beginning of "Ghost's reign", implying her terror is not over. Ghost's fate is unknown.
Ghost is an obsessive thirteen-year-old girl who is very ardent and not afraid to express herself. Afflicted with a form of insanity and delusion, she has a tendency to narrate to herself in the third person and supposedly cannot tell the difference between fantasy and reality.
She has shown some form of insanity. Initially, it appears to be comical and childish. She tries to remain cheery and appears ignorant to others' annoyances. She holds a deep passive-aggressive behavior as a result to her constant bullying. Her true nature is shown to be ruthless and cold, as when she locks Brigitte in her basement, she shows no emotion. Interestingly, she shows ignorance to when anyone else speaks in the third person, calling it "weird". Among the problems she was diagnosed with at the clinic, was "hostility to traditional morality".
Ghost has light blonde hair and wears braces. She has pale skin and has a slender build.
- According to Ghost, Barbara, her grandmother, calls her 'Ghost' because of the sudden loud sounds she makes. She also mentions her grandmother reading something about "reverse psychology" and mentions that her nickname may have something to do with it. It is possible Barbara believes that by naming Ghost by her nickname, she will act like a ghost and reduce her sudden loud sounds.
- Ghost was portrayed by a Tatiana Maslany who was several years older than Ghost's age of 13.