Deel De was a Force-sensitive female Twi'lek from Ryloth. Born to a noble family on her homeworld, she grew up privileged and pampered. However, it soon became obvious to her parents that she was strong with the Force, and they kept her powers secret for fear of the Jedi taking their only child.
When she became an adult, Deel roamed the galaxy and discovered her true calling after talking to Keroth Ishedur: the dark side of the Force. Afterwards, she to married Larith De so that she had a respectable cover for her shady activities.