Mon Mothma
She first appears in Star Wars Episode VI: Return of the Jedi in 1983.  Caroline Blakiston played Mothma. Genevieve O'Reilly will play her in the upcoming series Andor  O'Rielly also played Mon Mothma in Revenge of the Sith but the scene she was in was cut from the final version of the movie.  She was in the Star Wars: The Clone Wars television series.