Abaddon (Supernatural)

Abaddon is an ancient and powerful demon, a knight of hell, hand picked by Lucifer himself and empowered with great powers. Upon learning of Father Thompson's work on curing demons she was sent to stop him.

History
Following murdering father Thompson, in 1952 Abaddon took the body of Josie Sands and attacked the Men-of-Letters (a secret supernatural order,) she destroyed the order but one inisuiate Henry Winchester (Sam and Dean's grandfather) managed to escape, with the a secret box passed to him by an elder, using a spell to travel sixty one years into the future to his grandsons. However Abaddon followed him. Dean managed to temporarily stop Abaddon by stabbing her in the back in with his demon killing knife. But Abaddon was to powerful, the knife only stunned her. However in the time Henry, Dean and Sam escaped. Henry informed them off how powerful and dangerous Abaddon was. While Abaddon read the memories of someone who spotted them before slitting his throat.

Abaddon later followed them to what used to be the Men-of-Letters base, but was now a comic store. There she took the memories of the clerk, and attracked by her punk clothing, murdered her and stole it. She then snuck into the home of the last Men-of-Letter, Larry Ganem, whose existance she had learned from the clerks memories and took his wifes body. She then waited for Sam to arrive and learned from the two talking that the box contained the key to the Men-Of-Letters secrete bunker, where they kept every spell, artificact, scroll and other collected over a thousand years. Abaddon then revealed herself, knocked out Sam and murdered Larry with a butchers knife.

She contacted Henry and Dean, and told them to bring the box and Henry or she would kill Sam. They later arrived and handed both Henry and the box over to them. However as they were leaving Abaddon telekinetically closed the doors trapping them. At that momment Henry shot her through the head. Abaddon laughed and slit his chest. Only to discover the box was a fake. She tried her mind reading trick only to discover it was working and she could move. It turned out Dean and Henry had out smarted her, they had carved a devils trap into the bullet thus trapping Abaddon. Dean cut her up and told her they were going to burry her in concrete, she would never get out again.

Later, when needing a demon to cure for the final trial, following Crowley removing all the demons from earth. They dug up Abaddon, and stiched her back together. However making sure not to attach her hands, while the bullet in her head stopped her moving. Abaddon informed them she was aware of the demon curing ritual and it was her that had killed Father Thompson, that was how she discovered the Men-of-Letters in the first place. She awas also shocked to discover a former "salesman" was now king of hell. Following Crowley calling to taunt them about killing more of there friends, Sam and Dean left Abaddon alone. However desptite them detaching her hands, she discovered she could still control them, using them she took the bullet out of her head and fled.

Following Crowleys capture, he managed to send an SOS for demonic assistance. Abaddon responded and easily through Sam through a window. However not interested in Crowley, Abaddon tried to kill him so she herself could become the ruler of hell. Once again her arrogance caused her defeat, as she did not notice Sam sneak up behind her and toss holy oil over her vessel. Igniting it, she was overcome with agony and forced to flee her vessel leaving to parts unknown.