Abeloth

The Servant
In a time that far predated the Old Republic by hundreds of thousands of years, a once mortal Force-Sensitive female who had resided on an unknown jungle planet was chosen by a family of godlike beings known as the Ones to act as their Servant. She did indeed serve the Father and his two children the Son and the Daughter, following their every order to the letter. After the family had come to know her kindness and great care for them it did not take long for the Ones to consider their Servant as part of their family, filling the role of the Mother of the two children. As Mother, she worked to keep the peace between the ever warring and became fond of the Father, ensuring the family be happy for many years. Under her guidance, the children used their powers to restore their home to its former glory, repairing the damage and neglect caused by the conflict of their rivalry. But as the years went by, the Mother began to age while her family was immortal.

The Mother
In her old age, she could no longer control the Son and Daughter's rivalry, and she began to fear that her family would abandon her. In order to hold onto the life she had and the family she loved, the Mother sought to perform forbidden acts to maintain her youth and beyond. Having spent decades among the Ones, the Mother learned many of their secrets, including nexus points where the Force flowed the most freely, in a concentrated wellspring of energy that could be more easily harnessed by those sensitive to its power. One night while the Father was distracted by his warring children, she sneaked into the vergence area where she used powerful relics owned by the Ones to begin a ritual to make herself into a godlike being. The Father discovered her plans and tried to stop her, but he arrived to late to stop the Mother from completing her transgression. After the process was done, the Mother was reborn an all-powerful Force Wielder.

Abeloth
As a Force Wielder, the Mother’s powers rivaled if not surpassed her own godlike family. But because she was originally a mortal, the ritual corrupted and twisted her soul and body alike, giving rise to the Dark Side entity known as Abeloth. With her newfound powers, Abeloth sought to not only control but dominate her children, forcing them to kneel before her. With a sense of horror and disappointment toward what Abeloth had become, the Father proceeded to save his children by fleeing the planet they once called home, leaving Abeloth behind with the realization that she would experience her deepest fear of her family leaving her behind. This act drove Abeloth to madness, fueling a desire to be loved and adored. Knowing that Abeloth would prove a danger to the entire universe at large, the Son and Daughter joined together to construct a prison capable of containing Abeloth, using the native inhabitants of primitive planets as workers.

Imprisonment
Some centuries after trapping Abeloth on the planet that would later be known as Jedha, the Son and the Daughter retreated with the Father to the ethereal realm Mortis, with the only exception of their return to the galaxy being to secure her imprisonment whenever it became possible for her to escape after the Force severely fell out of balance. Cultures that had been tormented by Abeloth refer to her as the Bringer of Chaos, emerging after a cycle of peace to bring a cycle of chaos, thriving on fear and destruction, fanning the flames of conflict every time she escaped and sending the galaxy into chaos and turmoil. Each time she managed to break free, the Son and the Daughter would return and manage to defeat Abeloth, locking her back in her prison. This cycle would repeat itself for hundreds of thousands of years, until the Ones died during the Clone Wars when three Jedi were brought to Mortis to see if Anakin Skywalker was the foretold Chosen One.