Abeloth

Abeloth, also known as the Bringer of Chaos, was a being who was very powerful in the dark side of the Force.

She first lived as the Servant, a mortal woman who served the powerful Ones on a unknown jungle planet over a hundred thousand years before the Battle of Yavin. But over the course of her life, she became the Mother: she kept the peace between the Father's warring Son and Daughter, and became a loving part of the family. But she was still mortal—she grew old while her ageless family lived on—and she feared that she would lose her precious family.

In a desperate attempt to hold onto the life she so loved, the Mother did the Forbidden—she drank from the Font of Power and bathed in the Pool of Knowledge. Her actions corrupted her, transforming the Mother into the twisted, immortal entity known as Abeloth.