Lyn Rakish (Rya Kihlstedt), also known as the Fourth Sister, is a supporting antagonist and major antagonist of two Star Wars Spin-Off series, Obi-Wan Kenobi and Tales of the Empire.
Lyn was a former jedi who turned to the dark side during the Jedi Purge and became a member of the Inquisitorius in the Rise of the Galactic Empire. She recruits Barris Offee to join the inquisitors. However, during the hunt of an unidentified jedi, Barris abandoned the inquisitors and the Empire behind because of their cruelty. Lyn participated in the hunt of Obi-Wan Kenobi with her fellow inquisitors in n 9 BBY.