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I know everything. I'm the Devil.
~ Sister Mary Eunice, claiming to be the Devil while under demonic possession.

The Devil, also known as Satan, is the main antagonist of American Horror Story franchise.

Initially introduced as a powerful entity wrecking havoc in Briarcliff Manor, as well as the unseen influence in Hotel Cortez, it is revealed to be Satan itself (or even possibly a segment to Satan itself).

In both seasons of American Horror Story: Murder House and American Horror Story: Apocalypse, the Devil was revealed to be the true mastermind behind the birth of Michael Langdon, the Anti-Christ born from the rape of Vivien Harmon by Tate Langdon, due to Satan brainwashing and influencing Tate's malicious actions and even took possession of his corporal spiritual form to rape and impregnate Vivien with Michael.

Mary Eunice was portrayed by Lily Rabe in both the second season and the fourth season (pre-possessed), who also voiced Honerva aka. Haggar from Voltron: Legendary Defender. Jed Potter was portrayed by Devon Graye.


The Devil serves as one of the two main antagonists (along with the original Bloody Face) of American Horror Story: Asylum, the unseen overarching antagonist of American Horror Story: Murder House and American Horror Story: Hotel, the overarching antagonist of American Horror Story: Apocalypse and a minor but pivotal antagonist in American Horror Story: 1984.

The Devil returns as the overarching antagonist in the first season of the spinoff series American Horror Stories, serving as the overarching antagonist in the opening two-parter Rubber (Wo)man and the unseen overarching antagonist in the fifth episode Ba’al and the season finale, Game Over.


At least while at Briarcliff, the Devil lacked a true form, and only existed in a host. While its behavior while in control of Jed Potter was monstrous and uninhibited, it initially stayed very low key under the guise of Sister Mary Eunice, subtly manipulating and mentally torturing Briarcliff's inhabitants (especially Sister Jude with her dark past, and Dr. Arden with his previous life as a Nazi scientist). However, as time went on, the Demon revealed itself to Jude (who it had previously encountered during Jed's exorcism) and Dr. Arden (who desperately followed the Demon in hope of seeing at least a glimmer of Mary Eunice, whose innocence he cherished). After Jude was removed as head of Briarcliff and incarcerated within, Mary Eunice grew closer to Monsignor Timothy Howard, promising to help elevate him through the ranks and make him Pope. The Demon's master plan was thus set in motion: a take over of the Catholic Church. It had the power to possess people, make their eyes glow demonically, as well as reading the minds of people and telekinetically moving objects. The demon often enjoyed reading a person's mind to see their secrets, such as Sister Jude's alcoholic past and the "murder" she committed to its own amusement. The demon thrived solely through possession and if its host died, it died along with him, making the host both its strength and its ultimate weakness.


American Horror Story: Asylum

Jed Potter

Jed Potter is a seventeen-year-old boy admitted to Briarcliff Manor by his parents after he is found in the family barn having disemboweled their best cow and muttering an unknown language while under the possession of a demonic entity. It is unknown how Jed was possessed by a demon in the first place. After his death, Sister Mary Eunice was then under its control. During his brief time in the sanatorium, the Devil mocks Sister Jude and Dr. Oliver Thredson. He mocks Sister Jude about killing Missy Stone by accident.

Sister Mary Eunice

The Devil's twisted smile, while possessing Mary Eunice.

After initially getting into Briarcliff through Jed, the Devil took over young, innocent Sister Mary Eunice, and slowly used malice and manipulation to get Jude fired from Briarcliff. Acting as Eunice, it replaced Jude as head of the establishment, becoming superior over Dr. Arden. "Mary Eunice" slowly began to get Monsignor Timothy's approval of "her" changes to Briarcliff's conduct and daily life for the inmates. This included a Christmas party, and a showing of "Rudolph the Red Nosed Reindeer", things Jude had previously described as acts of turning "away from God". Still, despite the public face as sweet, innovative Mary Eunice, the Demon was committing dark, far less subtle crimes in the shadows, such as killing the Briarcliff security guard Frank, setting serial killer Leigh Emerson loose on Jude, and killing a man Jude was using to get information on Arden (the Demon used this murder to reveal himself to Jude).

At one point, the Devil confronted Shachath, the Angel of Death, demanding she leave Briarcliff after the Angel was "called" by a dying inmate. Shacath retorted that she had been invited, unlike the Demon, whom she referred to as a cousin - "like [Shacath], but fallen". The Angel also noted that she could hear Mary Eunice trying to fight against the Demon, and momentarily, Mary Eunice took control of her own body again, sobbing and pleading to Shachath to free her. The Demon quickly resumed control; before leaving, Shachath warned it they would meet again.

Soon, the Monsignor learned of Mary Eunice's possession after being told about it by Shachath, and he attempted to cast the Demon out of Mary Eunice. However, the Monsignor was overpowered and violated by the Demon, taking his virginity and that of Mary Eunice. Lost and helpless, the Monsignor consulted with Sr. Jude - now merely Judy, a patient at Briarcliff herself. In her insensible, post-electroshock-therapy state, Judy could only warn that the Monsignor kill Mary Eunice before it was too late.

Later, the Demon confronted Timothy and repeated its promise to manipulate events until Timothy was made Pope, so that the Church would finally be under Satanic control. Defying this, Mrs. Howard attempted to appeal to any vestiges of Mary Eunice's true self and her inner virtue. This infuriated the Demon, who attacked the Monsignor and promised to devour the "last morsel of [Mary Eunice's] soul". Briefly, Mary Eunice regained control of her body once more, tearfully telling the Monsignor she was tired of fighting against the Demon, and that she wanted to go (die).

Taking pity upon the tearful nun and seizing advantage of her weakened state, the Monsignor quickly cast Mary Eunice over a nearby staircase railing. They exchanged one last gaze as the young nun fell, before she hit the floor far below. Shacath then appeared, kneeling down before the fatally injured Eunice, who again asked the Angel to take her. "I'll take both of you", Shachath replied, and kissed her.

It is implied that the Demon was destroyed or sent back to hell by Shacath, while Sister Mary Eunice's soul was saved and ascended to Heaven, freeing her from the demonic control once and for all. However, the Devil's influence still exist in Braircliff, so strong that pushed Timothy towards his desire of power, leaving him to abandon both Sister Jude and Briarcliff to their destruction.

American Horror Story: Murder House

The Devil itself is confirmed to be the dark force that drove Tate Langdon into raping Vivien Harmond as the Rubber Man, whilst conceiving Michael Langdon, the Anti-Christ, as well as being responsible for all of Tate's other atrocities, by influencing and controlling actions, and even taking full possession of Tate (in spite of Tate being a corporal ghost).

American Horror Story: Hotel

Although not appeared or mentioned in American Horror Story: Hotel, the Devil is implied to be the one behind the supernatural dark power of Hotel Cortez, corrupting the guests and making them commit vile actions, as well as the creation of the Addiction Demon, who worked for James Patrick March.

This was suggested in "Could It Be... Satan?", where it is revealed that the Hotel Cortez is a "hellmouth", or gateway into Hell itself, thus implying that the Addiction Demon may have originally hailed from somewhere in the depths of the underworld and appeared to Sally McKenna as her personal tormenter.

American Horror Story: Apocalypse

There're also Satanists who appeared in American Horror Story: Apocalypse that believed Michael was their Dark Messiah and plotted the Apocalypse with him, eventually starting the organizing of the Cooperative and the world's destruction.

After the death of Michael at the hand of Mallory, the Satanists who involved in the conspiracy didn't get punished due to the renewal of the timeline. They began to search for a new Anti-Christ in this renewed timeline, where they eventually found Devan Campbell, the son of Timothy Campbell and Emily, presumably caused by their special genes that made them targeted by the Cooperative (in the old timeline) at the very first place, suggesting at least one of them were somehow related to the Devil to some degree.





  • During the running of American Horror Story: Apocalypse, the Church of Satan criticized the plotline involving Michael Langdon's relations with Anton Lavey, its founder, for the series' inaccurate portrayal of the organization's founder and of Satanists in general, pointing out that LaVey did not believe in the Antichrist nor practiced ritual sacrifice to Satan himself.
  • In a way, the Devil bears similarities with Pazuzu from The Exorcist while Sister Mary Eunice bears similarities to Pazuzu's main foe, Father Karras. Both of the Devil and Pazuzu killed one people and possessed a clergy during exorcism, and they both taunted the clergy's dark past.
    • However, this version of the Devil has much bigger plan than Pazuzu.
    • The manner which Sister Mary Eunice sacrificed herself to defeat the Devil is similar with Father Karras, who jumped out of the house and defeat the devil by killing himself, though Mary Eunice defeated the Devil with the help of the Monsignor, and the period she was under possession was much longer than Karras.
  • Sister Mary Eunice/the Devil is the second character to be portrayed by Lily Rabe. The first was Nora Montgomery, the third is Misty Day, the fourth is Aileen Wuornos and the fifth is Shelby Miller. All of her characters died at last and/or appeared as a ghost, though as of 'American Horror Story: 'Apocalypse, Misty was revived.
  • The sacrifice of Sister Mary Eunice against the Devil is considered to be one of the saddest moments in American Horror Story.
  • The Devil's vessel, Sister Mary Eunice is the only character whom Lily Rabe portrayed twice and though Sister Mary Eunice was yet to be possessed by the Devil when she appeared in Season 4.
  • Lily Rabe had received vast acclaim for the role, and in an event, she hinted that Sister Mary Eunice/the Devil is her favorite role on 2013 Paleyfest. Arguably, Sister Mary Eunice is her breakout role.
  • Sister Mary Eunice has been absent in three episodes overall throughout the season. Those episodes are "Spilt Milk", "Continuum" and "Madness Ends". In all of these, the cause was her confirmed death in The "Name Game".
  • There was a unproven theory that Sister Mary Eunice is not totally possessed, as the Devil only awoke her evil side. And he is not in total control, on the contrary, she is controlling him. This theory could somewhat be unlikely, though.
    • Also, there were rumors that the Devil or even Sister Mary Eunice herself is the Bloody Face, yet it is now disproved since the real Bloody Face had showed himself.
  • As of American Horror Story: Apocalypse, the Devil could possibly be the considered the main antagonist of the series as a whole.

External Links


           Ecran Titre d'American Horror Story.png Villains

Murder House
Rubber Man | Constance Langdon | Hayden McClaine | Larry Harvey | Moira O'Hara | Charles Montgomery | Infantata | Bianca Forest | R. Franklin | Michael Langdon | Langdon Family | Fiona | The Devil

Bloody Face (Dr. Oliver Thredson, Johnny Morgan & Imposters) | The Devil | Dr. Arthur Arden | Sister Jude | Timothy Howard | Leigh Emerson | Jenny Reynolds

Fiona Goode | Marie Laveau | Madison Montgomery | Delphine LaLaurie | The Axeman | Hank Foxx | Spalding | Papa Legba | Minotaur | Joan Ramsey | Archie Brener | Alicia Spencer

Freak Show
Elsa Mars | Dandy Mott | Stanley | Bette and Dot Tattler | Maggie Esmerelda | Twisty the Clown | Chester Creb | Dell Toledo | Edward Mordrake | Rita Gayheart | Larry Gayheart | Dr. Arthur Arden | Penny's Father

Countess Elizabeth Johnson | James Patrick March | Ten Commandments Killer | Sally McKenna | Addiction Demon | Ramona Royale | Richard Ramirez | Hazel Evers | Charles Montgomery

Tomasyn White | Scáthach | Polk Family | Agnes Mary Winstead | Shelby Miller

Ally Mayfair-Richards | FIT (Kai Anderson, Ivy Mayfair-Richards, Beverly Hope, Harrison Wilton, Meadow Wilton, Gary Longstreet, Jack Samuels) | Winter Anderson | Babe Babbitt | Twisty the Clown

Cooperative (Michael Langdon, Miriam Mead, Jeff Pfister, Mutt Nutter & Wilhelmina Venable ) | Madison Montgomery | Dinah Stevens | Ariel Augustus | The Devil | Tate Langdon | Constance Langdon | James Patrick March | Moira O'Hara | Langdon Family | Papa Legba | Delphine LaLaurie | Marie Laveau

Margaret Booth | Richard Ramirez | Mr. Jingles | Lavinia Richter | Donna Chambers | Montana Duke | The Devil | Bruce

Double Feature
Part 1: Red Tide
The Chemist | Belle Noir | Austin Sommers | Alma Gardener | Lark Feldman | Ursula Khan | Flesh Phantom

Part 2: Death Valley
Theta | Valiant Thor

American Horror Stories
Season 1
Rubber (Wo)man: Scarlett Winslow | Ruby McDaniel | Maya | Adam | Tony Peterson | Infantata
Drive In: Verna | Larry Bitterman
The Naughty List: Santa
Ba'al: Ba'al| Matt Webb| Bernadette
Feral: Ferals
Game Over: Scarlett Winslow | Ruby McDaniel