Darth Dell

Empress Dell was probably considered the most traitorous of the Sith Empresses. She was the Grand-Daughter of Empress Tarias.

Betrayal
When Empress Dell discovered she was unable to have children in 40 BBY, the Sith Council banded together to help her conceive a child using the powers of the Dark Side.

In 11 ABY this happened, and Darth Dell fell pregnant. Realising soon after that she carried twins, she allowed them both to grow, instead of shaping the future heir, and culling the second twin.

When she gave birth to the twins in 12 ABY, she fell heavily ill from the birth. The Council, enraged by her deception, allowed her to die the following year. The two children, Chick and Cal Zavier, proved to be strong in the Force, as was to be predicted from their unnatural conception.

Behind the Scenes

 * The name for Empress Dell originated from the user on TDSL "Darth Dell" who was the real life mother of the user "Empress Chick". As such, the character Dell was the mother, and therefore previous Empress, of Chick.