|Actor|| Nicki Aycox|
|Location||Not stated how the Demon got out of Hell initially. Exorcized to Hell in 1.22 Devil's Trap. Crawled out in early 2007.|
|Occupation|| Black-eyed Demon|
|Episode(s)|| 1.11 Scarecrow|
1.22 Devil's Trap
2.14 Born Under a Bad Sign
Referred to In 4.02 Are You There God? It's Me, Dean Winchester
5.01 Sympathy For The Devil
5.10 Abandon All Hope
6.10 Caged Heat
7.17 The Born-Again Identity
7.21 Reading Is Fundamental
7.23 Survival Of The Fittest
Meg is a black-eyed demon who trained as a torturer in Hell under Alastair. She initially worked for Azazel, and later for Lucifer. She acts as Azazel's agent and kept tabs on Sam after he left Stanford to hunt with Deanand twice tried to kill John Winchester, the second time in an attempt to get The Colt from him. She is captured by Bobby and the Winchester's at Bobby's place, and it is through her it is revealed that the demon is possessing a young woman. She who dies when the exorcism is performed. Meg later escapes from Hell, and possesses Sam and kills other hunters in revenge for her exorcism. Bobby exorcises her again.
Meg returns to Earth, possessing a different woman, as a minion of Lucifer during the Apocalypse. As a Lucifer loyalist she is hunted by Crowley, and forms an uneasy alliance with the Winchesters to try and capture him. 
The demon has black eyes and other characteristics similar to those of the common demon, although over time she has become more powerful. When she first appears she works for Azazel, who she calls "Father". He later refers to her as his daughter..
The demon is referred to as Meg after the name of the host in which she first appears, Meg Masters.
Following the death of her host body, Meg Masters, and her exorcism, the demon returns to Hell but later escapes and possesses Sam. She plans to use Sam to kill as many hunters as she can and to torture and eventually kill Dean as her revenge on them. She is stopped and eventually exorcised again, but is not sent back to Hell.
Meg returns after the Apocalypse has begun, possessing the body of a young girl from Cheboygan, MI who moved to Los Angeles to be an actress. She shows herself to be loyal to Lucifer and has a demon possess Bobby to find out about the Michael Sword. By turning Ruby's knife on himself, Bobby exorcises the demon but also paralyses himself.
Meg is with Lucifer in Cathage when the Winchesters, Castiel, Ellen, and Jo arrive to attempt to kill Lucifer with the Colt. She sends Hellhounds to attack them, which ultimately results in Ellen and Jo's deaths. Lucifer sends her to guard Castiel, who is trapped in a ring of burning Holy Oil, but he manages to break free by making her fall into the flames and using her meatsuit as a bridge.
Following Lucifer's imprisonment, Crowley takes power in Hell and aims to kill those loyal to Lucifer. Sam deduces that she is on the run, and he and Dean agree to help her find Crowley as part of their quest to restore Sam's soul. After they learn that Crowley cannot retrieve Sam's soul, Castiel kills Crowley, and Meg escapes.
- She first possessed Meg Masters around October 2005, and possessed her for a year before she was exorcised around November 2006.
- Around March 2007 (see Timeline (Season 2)), she possesses Sam (aka Evil!Sam). Her powers seem stronger and she says she no longer gives a "rat's ass" for Azazel's plans.
- Sometime in 2009, Meg reappears in a new meatsuit and is working with Lucifer.
- Several months after Dean returns to hunting, Meg approaches the Winchesters. Their partnership results in the death of Crowley, but not a lasting alliance.
Sam has left Dean and is traveling to find his father in California when he encounters Meg Masters, who is also hitch-hiking. Their first encounter is brief, as she soon gets a lift with "sleazy van guy". She later turns up at the bus station and she and Sam bond over feeling trapped by their families' expectations. Meg tries to dissuade Sam from going back to his brother when he becomes concerned that Dean is in trouble. At the end of the episode, Meg has found another ride. She gets the driver to pull over and then cuts his throat with a dagger, collecting his blood in a goblet. She swirls the blood with her finger, and after a Latin incantation, communicates with someone she calls "Father". She reveals that she knows the true identity of Sam and Dean and wanted to kill them, but has apparently been instructed not to do so.
The boys run into Meg in a bar in Chicago. Sam is immediately suspicious of this coincidence and follows her, eventually discovering that she has a black altar set up in an abandoned warehouse, and is controlling the daevas. She again uses the goblet of blood to communicate with someone to whom she reports. It is later shown that the whole set-up is a ploy to lure John Winchester and the boys to Chicago. Meg fails in her plan to destroy the family despite capturing Sam and Dean because when her altar is destroyed, the daevas turn on her. She plummets from one of the warehouse's upper stories down to the sidewalk. However, at the end of the episode, she is seen alive and well, watching the Winchesters go their separate ways.
Meg murders John Winchester's friends Pastor Jim and Caleb in order to force him to hand over the Colt. She gets John to come to a warehouse in Lincoln, Nebraska on the corner of Wabash and Lake. He hands over a fake Colt, which is identified as such when Meg's "brother" Tom shoots her with it and she doesn't die. She and Tom then capture John Winchester.
Meg calls Dean to reveal that she is holding their father. Later she tracks the brothers down at Bobby's place, but is captured under the devil's trap on Bobby's ceiling. Sam starts to exorcise her, while Dean interrogates her as to their dad's whereabouts. Bobby points out that she is actually a woman possessed by a demon, and that because of the injuries she sustained in Chicago, will die when the demon leaves her. The demon is banished, and the human Meg tells Sam and Dean where John is being held before she dies.
Meg has been in hell - which she describes as "a prison, made of bone and flesh and blood and fear". She has escaped to possess Sam, planning to kill hunters and provoke Dean into killing Sam. While possessing Sam, the demon smokes menthol cigarettes and drinks hard liquor. While in Sam's body Meg kills a hunter, Steve Wandell, and using Jo for bait, nearly kills Dean. It goes after Bobby, but her possession of Sam is revealed when Bobby gives her beer laced with holy water.
Bobby and Dean trap her beneath a devil's trap, and she reveals that she no longer gives a "rat's ass" for the plans of the The Yellow-Eyed Demon. Bobby and Dean find it difficult to exorcise because it has used a spell to bind herself to Sam's body. Bobby finally burns binding brand with a fire iron, and the demon is exorcised, but not sent to hell.
Lilith casts a spell that breaks one of The 66 Seals that hold Lucifer captive and releases the Witnesses - ghosts of people killed in supernatural situations. They return as vengeful spirits and kill those who 'let' them die: hunters. Meg Masters returns and confronts Dean. She tells him how she was a college student when she was possessed, that she was 'awake' during her possession, and witnessed much horror. She also tells him how her disappearance had a terrible effect on her younger sister, who killed herself after Meg was found dead. The spirit of Meg Masters is put to rest when Bobby completes his spell.
When Dean works out the meaning of Chuck's message about the location of the Michael Sword, Bobby attacks him, revealing that he is possessed by a demon. At that point Meg arrives, informing Dean that the demons want him dead so he can't stop Lucifer. She orders the possessed Bobby to kill Dean with Ruby's Knife, but just as he is about to strike, Bobby manages to battle the demon and stab himself instead. Sam returns and helps dispatch the other two demons, but the Meg!Demon escapes by leaving her vessel.
Meg apparently recovered her vessel and joined Lucifer after her encounter with the Winchesters. She is present with Lucifer in the city of Carthage, Missouri when Lucifer performs the ritual to release Death. Meg confronts Sam, Dean, Ellen, and Jo in the streets of Carthage, setting a pack of hellhounds on the group. Jo is grievously wounded and they retreat to a hardware store to regroup.
Meg returns to Lucifer's side to ask for further instructions. He tells her to leave the brothers be, and leaves her to watch over Castiel, whom Lucifer has trapped within a ring of burning Holy Oil. Meg gleefully revels in the fact she and her kind are "winning" and taunts the angel about it. Castiel counters with what the demon Crowley's told the Winchesters: that Lucifer cares little for demons and sees them as a means to an end that will be destroyed as soon as humans are eradicated.
Meg does not believe him and comes forward to argue. Castiel telekinetically releases a large pipe from the ceiling above her and it swings forward, knocking Meg through the fire and into his arms. Castiel immediately tries to exorcise her with his touch, but his power fails him now that he is cut off from Heaven. Meg mocks Castiel, asking what he plans to do now that he is powerless. Castiel replies by throwing her onto the fire, and as she screams in agony walks over her body to escape from captivity.
Meg returns in her previous host, despite that it has been thrown into holy fire by Castiel. She and other Lucifer loyalists are being hunted by Crowley so she kidnaps Sam and Dean in order to force them to reveal Crowley's location. As Sam states, it was either "him or her."
Sam strikes a deal with her: she can torture and kill Crowley if Sam gets his soul back. Meg, the Winchesters and Castiel act on a tip from Samuel Campbell and locate Crowley's prison and infiltrate it, but are soon discovered by Hellhounds. Meg offers to hold them off and kisses Castiel, and gets an even more passionate kiss in return. When they separate, Meg is holding his Angel Sword.
She kills the Hellhounds with the weapon, but is then captured by a possessed Christian Campbell, who begins to torture her. Meg laughs at the pain, saying her host is a girl who moved to LA wanting to be an actress, and this probably wasn't even the worst thing to happen to her. While she is speaking, Dean kills Christian with Ruby's Knife. After trapping Crowley under a devil's trap, Meg tortures him to find out if he can restore Sam's soul. When he insists that he cannot, Dean hands the demon killing knife to her so she can kill Crowley, but he overpowers her and uses the knife to break the devil's trap. Castiel then appears with Crowley's bones, which he burns, killing Crowley. In the moment, Meg escapes before Dean can kill her.
As Dean takes Emmanuel Allen (the amnesiac Castiel) back to Northern Indiana State Hospital in the hope to cure Sam, who is being held there. Stopping to buy food, Dean is attacked by demons, but Meg shows up and kills one demon while the other flees. Dean is surprised to see her, and she tells him that she's there because of rumors about a wandering healer, who she's shocked to learn is "poor dead Castiel." She has an ongoing feud with Crowley and, like Dean, doesn't want him to know about Cas. Although they don't trust each other, Dean agrees to let her come with them to Indiana as long as she doesn't remind Castiel of his true identity yet. The three of them leave together.
At the hospital, Meg tells Castiel he's an angel and that he and Dean were best friends who used to fight together. Emmanuel realizes that he must be the "Cas" that Dean told him about, and he apologizes. After fighting the demons they find around the hospital, and his memories come back to him, assaulting him with images of his partnership with Crowley and his betrayal of Dean. Once the demons are taken care of, Meg and Dean approach him. He tells them that he remembers them—he remembers everything.
Unable to heal Sam, Castiel takes on his psychic damage himself. Meg gets a job at the hospital as a nurse so she can watch over him.
Meg rings the boys to let them know that Castiel has woken from his coma. When they arrive, Castiel is obviosuly not completely sane. He also seems to have become rather attached to Meg.
After the prophet Kevin Tran arrives to steal The Word Of God, and Dean dispatches the angels who come after him, Meg travels with the boys, Kevin and Castiel to Rufus's Cabin. At a gas stop on the way, Meg sees that a couple of demons are following them.
Later she meets up with the demons, under the pretense of making a deal, but kills them. When she returns to the cabin, the boys catch her in a Devil's trap (symbol), but she convinces them that her method of surviving is to find a cause - Lucifer, Azazel and follow it. Currently all she cares about is destroying Crowley. Sam and Dean believe her and set her free. Just then the angels arrive. Hester attacks Cas, but Meg kills her with an Angel Sword. She then flees.
Castiel fetches Meg back from the where she's been hiding. She is there when Crowely arrives, having been summoned by Sam and Dean, and he says that he does want to take her back to Hell and torture her, but not yet. It is Meg who reveals to the boys that Castiel can help them get Dick Roman, who has many Leviathans disguise themselves as copies of the real Dick Roman to hide himself. Since all the Leviathans were inside Castiel when he freed them from Purgatory, he can recognize their separate forms.
It is Meg who drives the Impala up to the front door at SucroCorp, smashing it through a giant sign, as a distraction to allow Sam, Dean and Castiel to get inside. She kills a number of Leviathan, but then two demons arrive, overpower her and announce they are taking her back to Crowley.
Meg in Fandom
- @DemonMegMasters - Meg Masters on Twitter