Chiss Twins

The Chiss Twins were a twin brother and sister who were powerful in the Force. They were Arch'aza'cnuruodo and Arch'elie'lia, the niece and nephew of former Grand Imperator Arch'ao'nuruodo; Arch'elie'lia would eventually become Grand Imperator herself. During their era, Arch'aza'cnuruodo became a Sith Lord named Darth Vendis and Arch'elie'lia inherited the title of Witch of Endor.