We don't know much of the cast for the upcoming Ahsoka series on Disney+, outside Rosario Dawson reprising the lead role but in an interview with Vanity Fair, Obi-Wan himself did confirm another actress that's joining the project, Mary Elizabeth Winstead. THR previously reported that Mary Elizabeth Winstead had joined the cast of Ahsoka and Ewan McGregor backed up that news in a new Star Wars profile for Vanity Fair.“My partner, Mary [Elizabeth Winstead], is doing that Star Wars series with Rosario and she’s about to start,” said McGregor in the interview.