Abaddon

Abaddon is a Knight of Hell who was single-handedly responsible for the extinction of the Men of Letters. She arrived in the present through time travel in her hunt for Henry Winchester and the mysterious supernatural object he was entrusted with; although she was incapacitated with a bullet with a devil's trap in it, she was later restored and managed to free herself.

Early Life
Abaddon is one of the first demons. She was personally selected by Lucifer to become a Knight of Hell. She is possibly the last surviving member of the Knights of Hell, as archangels were thought to have killed them all.

In 1958, demons learned of Father Max Thompson's attempts to turn them back into humans, and Abaddon was sent to kill him. She did so on August 5, but not before he revealed he had been working with a Men of Letters initiate named Josie Sands. On August 12, Abaddon possessed Josie and attacked the Men of Letters, now seeking to steal the key to their bunker, which housed much secret knowledge and objects that Abaddon could use to incite mass chaos. She killed everyone at the Men of Letters' headquarters except for Larry Ganem and Josie's fellow initiate Henry Winchester, who was entrusted with the key (placed inside a box) for safekeeping. Henry used a spell to travel through time, with Abaddon quickly following after him once she burnt down the headquarters.

Due to Abaddon's inexplicable absence, the denizens of Hell came to believe that she had been killed.

Henry's son, John Winchester, once interrogated a demon who had served Abaddon. John wrote this down in his journal.

Season 8
Abaddon appeared in the year 2013 in "As Time Goes By", where she was met by Henry's grandsons, Sam and Dean Winchester. Dean managed to stab her with the demon-killing knife, but while it hurt her, Abaddon survived, forcing the Winchesters to flee. After reading the memories of the motel clerk to learn what he knew about Sam and Dean, Abaddon killed the clerk and set off in pursuit of the Winchesters.

Abaddon travelled to the former location the Men of Letters' headquarters, which, as she was amused to discover, had been turned into Astro Comics after being rebuilt from the fire in 1958. She checked the memories of the clerk there to find out what Sam, Dean, and Henry had been there for. Abaddon liked the clerk's "The Devil Made Me Do It" shirt, so after killing the girl, the demon changed out of Josie's gown and pearls and stole the clerk's outfit.

Abaddon tracked the now blind Larry down and possessed his wife shortly before Sam arrived. She listened as Larry explained that the box opened the Men of Letters' highly important storehouse and gave Sam the coordinates to it. She then killed Larry and knocked Sam out before repossessing Josie's body. Abaddon called Dean and demanded that he trade Henry and the box for Sam's life, which he agreed to. She reneged on the deal by trapping Sam and Dean and mortally wounding Henry, who shot her in the head. Abaddon found the headshot to be a "rush," but her good humor instantly disappeared once she discovered that the box she was given was a fake. Demanding to know where the real one was, she tried to read Henry's memories, but was she unable to so much as move—the bullet now in her brain had been engraved with a devil's trap. Dean then decapitated Abaddon, planning to cut her into small pieces and bury these pieces in cement to permanently trap her.

Sam and Dean retrieved Abaddon's body parts and sewed them back together in "Clip Show". As a precaution, however, they did not reattach her hands, which were left in a nearby box. She deduced that Sam and Dean were planning to turn her back into a human (in order to complete the third trial), explaining that she was the one who killed Father Thompson. When the brothers received a phone call from Crowley, Abaddon was shocked to find out "the salesman" was now the King of Hell. Sam and Dean left the room to talk to Crowley, giving Abaddon the opportunity she needed: she had one of her hands climb out of its box, crawl onto her body, and remove the bullet from her head, thus enabling her to move again. By the time Sam and Dean returned, Abaddon had vanished.

After Crowley sent out a distress call in "Sacrifice", Abaddon showed up with both of her hands now reattached. She broke the devil's trap holding Crowley and flung Sam around before throwing the hunter out of a window. However, she was not there to save Crowley; she was furious that, in the time she was gone, a mere crossroads demon had assumed leadership of Hell. She proceeded to beat Crowley, saying that she wanted a "regime change," but before she could do anything else, Sam returned, doused her in Holy Oil, and set her on fire, forcing her to escape from Josie's burning body.

Personality
Abaddon is treacherous, greedy, and quick to anger, but also very cunning. She has a twisted sense of humor, seeming amused when she discovered that the Men of Letters' headquarters had been turned into a comic book store and then laughing when it seemed that Dean and Henry had fallen into her trap.

Although Abaddon enjoys causing suffering to others and basks in the fear her victims have of her, she prefers to kill her victims in quick, brutal ways and move on. She views killing as "art"; when comparing her murder of Father Thompson to her killing the Men of Letters, she judged how she slaughtered the Men of Letters to have been better, commenting that her killing of Father Thompson merely "got the job done."

Abaddon flaunts her superiority over others. However, her arrogance causes her to underestimate and underplay her opponents, which was how she was defeated in "As Time Goes By" and "Sacrifice". She was outraged at the idea of the crossroad demon Crowley being the new King of Hell, and beat him up when he tried to command her.

Powers and Abilities
Although Abaddon is a black-eyed demon, she is also a Knight of Hell and thus far more powerful than average demons. She displays some unique abilities not seen even from higher-ranking demons. Her presence and screams alone can trigger lightning and thunder.


 * Telekinesis - Abaddon has the ability to move people and objects with her mind. She flung Sam and Dean across a large warehouse with ease.
 * Possession - Abaddon can only become corporeal by possession of a human's body to be active on Earth. Even with a bullet carved with a devil's trap in her head, she could make her host's severed hand open the box it was in, move toward her, jump onto her body, and remove the bullet from her head.
 * Biokinesis - Abaddon caused Larry's eyes to bleed, damaging them so badly that Larry went blind.
 * Pyrokinesis - Abaddon caused candle lights to burn out. Henry believed that she burned down the headquarters of the Order of Letters.
 * Terrakinesis - Abaddon broke a devil's trap containing Crowley by causing tremors that cracked the floor of the church Crowley was in.
 * Super Strength - Abaddon easily overpowered a group of Men of Letters elders. She easily snapped a human's neck with just one hand, and also slit a human's throat using her fingernails.
 * Spell Casting - Abaddon casted a spell to travel through time to pursue Henry.
 * Invulnerability - Abaddon could not be killed by conventional methods such as being shot in the head or dismembered. She was also unaffected by an exorcism rite and able to walk on consecrated ground, and even survived being stabbed with the demon-killing knife, though she still found it painful. Holy fire could not kill her, but it hurt her enough that she abandoned her host and fled.
 * Immortality - Abaddon is an ancient demon who had been made into a Knight of Hell by [[Lucifer thousands of years ago. She has the potential to live forever unless killed.
 * Telepathy - By inserting part of her essence into humans, she can access their memories to see and hear what they saw and heard.

Weaknesses

 * Devil's trap - Abaddon is unable to escape a devil's trap or use her powers when caught inside one. However, she was able to make her dismembered hand move to her and remove the devil's trap-engraved bullet in her skull so that she could regain full mobility and power.
 * Archangels - The eldest and most powerful of the angels can destroy the Knights of Hell.
 * Demon-killing knife - Being stabbed with the demon-killing knife causes Abaddon enough pain that she falls down, but it cannot kill her.
 * The Colt - The gun is capable of killing demons.
 * Holy Fire - When Sam set Abaddon aflame with holy fire, she soon exited her host's body and fled out rather than continue enduring the agony it caused her.

Appearances

 * Season 8
 * As Time Goes By
 * Clip Show
 * Sacrifice

Trivia

 * Abaddon is the Hebrew word for "destruction."
 * Abaddon is the fifth demon of lore to appear in Supernatural, the other four are (in order of appearance) Azazel, Astaroth, Lilith, and Alastair.
 * There was an angel in the novel Supernatural: War of the Sons who was named Abaddon but went by the nickname "Don." This angel guarded Lucifer's Cage and sent Sam and Dean Winchester back in time. War of the Sons was published on February 9, 2011, two years before the demonic Abaddon was introduced on the show. Whether there is any correlation between the two characters is unknown.