Barriss Offee was a recurring character in Star Wars: The Clone Wars and once of the two main protagonists of the 'Takes of the Empire' arc of the Disney+ anthology sees Star Wars: Tales of (alongside Morgan Elsbeth).
She was a friend of Ahsoka Tano before her betrayal and was a former Jedi Padawan of Luminara Unduli. Once a Jedi Knight, she turned against her order under the belief that they had grown to be responsible for the continued Clone War and were, alongside the Galactic Republic itself, failing, considering the Jedi to have become an army in service to the dark side.
After Order 66, she was released from her cell by Fourth Sister and joined the Inquisitorius.