Reva Sevander, better known as the Third Sister, is the secondary antagonist of the 2022 Disney+ Star Wars miniseries Obi-Wan Kenobi.
She was a Jedi youngling who survived Order 66 and fell to the dark side of the Force, joining the Galactic Empire by becoming part of the Inquisitorius. The Third Sister is later involved in trying to track down Obi-Wan Kenobi, an Order 66 survivor, whom she specifically targets out of a desire to gain Darth Vader's favor, all just to get closer to Vader and kill him for killing her youngling friends long ago.