Early life

Gabriel was born to Serena May, but he was a parasitic twin that shared a brain with Emily along with developed arms. Due to their appearance, Serena gave the children over to the hands of the Simion Research Hospital. Through some unknown means, Gabriel developed supernatural abilities such as control over electricity. However, he was also violent ultimately forcing Dr. Florence Weaver, John Gregory, and Victor Fields to perform a surgery to remove Gabriel from his sister.

Gabriel massacres several faculty members before being reprimanded and the operation was initiated. While they were able to remove most of Gabriel's body from Emily, whatever was left of him was locked away in the back of her head. After getting adopted by Jeanne, Emily was told that Gabriel was her imaginary friend anytime she would speak with him telepathically. Gabriel, still determined to keep control over his host, tries to telepathically force Emily (now renamed Madison) to commit vile acts such as killing Sydney when she was still in her mother's womb, but she is able to restrain herself from performing the deed. From there, Gabriel became dormant and forgotten.

Twenty-Eight Years Later

Years later, after suffering two years of miscarriages, Madison gets into a fight with her husband Derek leading to him pushing her into the wall inadvertently awakening Gabriel due to the impact. While Madison locks herself in her bedroom and sleeps, Derek is brutally murdered by Gabriel, and she discovers his body the next day after having a vision of someone breaking into her house to murder Derek. She was then attacked by the assailant.


Regaining consciousness in the hospital, Sydney informs her stepsister that her baby did not survive the attack. Meanwhile, Gabriel abducts a woman when she was hosting the Seattle Underground Tour and imprisons her in some dark place.

More strange murders happen with Madison receiving vivid visions of them: Dr. Florence Weaver is stabbed multiple times by the sharpened blade of a broken award; Gabriel then savagely kills Fields when he was sleeping; and Gregory is found by police detectives Kekoa Shaw and Regina Moss when Madison explains her psychic link to the killer.

It is revealed that the woman Gabriel kidnapped was Serena, and that she was actually trapped in Madison's attic. As such, Madison is incriminated for the string of murders and is taken to the police department. When she was taken to a cell that housed several female inmates, Madison is brutally beaten by several of the inmates, but that inadvertently triggers Gabriel, and he massacres all the women inside. Gabriel then escapes from the cell and kills several police officers.

After Sydney returns to confront Jeanne about Madison's connection to Gabriel, realizing that Gabriel was going to the hospital to kill Serena. Reaching the hospital, Gabriel throws a patient's bed at Sydney, trapping her under it. It is also revealed that Gabriel was the reason for the miscarriages Madison suffered: he fed off the fetuses to replenish himself until he was strong enough to break out. As he was preparing to finally kill Sydney, Serena tries to convince him that she truly did love him and that she was wrong to give him away. He seemed to consider it for a brief moment before Kekoa comes in to shoot him. Enraged, Gabriel shoots Sydney in the head and then smothers Serena to death by pinching her nose.

However, it then turns out that Madison had learned how to control her mind, now regaining control of her body. Gabriel threatens her saying that he would return someday to which she tells him that she will be ready for him and locks him away in a subconscious jail cell.

Powers and Abilities

Powers:

Shared Physiology: Gabriel is an extreme teratoma growing out of the back of Madison's brain. Since they literally share the same brain, Madison and Gabriel can manipulate each others vision and hearing. Sharing the same brain also allows Gabriel to highjack Madison's body and use it for himself. Since Gabriel was using Madison's body to commit his crimes, Madison and Gabriel posses all the same powers.

• Electrokinesis: Gabriel can manipulate electrical energy. He is able to emit an electromagnetic pulse (EMP) that is powerful enough to blow light bubbles, destroy electronic locks and even quicken a pacemaker to the point that it overheats and explodes a man's heart and chest. Since Gabriel has no vocal cords, he speaks through phones and radios by broadcasting his thoughts as radio waves (which are a type of electromagnetic radiation).
• Super Strength: Gabriel is incredibly strong despite Madison's petite build. He can kick through brick walls, cause compound fractures with a swipe, and ripped clean though a woman's torso with his bare hands. Even as a child, Gabriel was able to kill several adults through brute strength alone.
• Agility: Gabriel can dislocate every bone in Madison's body, giving him extreme flexibility and agility. Gabriel is easily able to scale walls, dodge a room full of gunfire and take on several opponents at once. Since Gabriel grows out of the back of Madison's head he often moves backwards, and is agile enough to maneuver through a room full of debris and engage in combat while doing so.
• Accelerated Healing: The most consistent example of Gabriel and Madison’s healing factor is the emergence of Gabriel himself, who causes the entire back half of Madison’s skull to split open when he takes over her body. Upon Gabriel’s withdrawal back into her cranium, the severe wound heals to the point that it is unnoticeable, with residual bleeding and headaches being merely short-lived side effects, and leaving Madison completely capable of doing everyday activities unaffected. Madison also took an onslaught of beatings from the female prisoners, yet Gabriel is able to easily kill them and everyone in the precinct moments later.

Abilities:

• Expert Combatant: Gabriel is a skilled combatant, able to take on a precinct full of armed police officers with nothing but a blade.