who played emperor in return of the jedi
After a minor part in the film Dragonslayer, McDiarmid was cast by George Lucas in Return of the Jedi as Emperor Palpatine, the main villain. Sixteen years after appearing in Return of the Jedi, he reprised the role as the character's younger incarnation of Senator Palpatine and Sith Lord Darth Sidious in the prequel films: The Phantom Menace, Attack of the Clones, and Revenge of the Sith. The prequels had him play two faces to his character; he re-created his diabolical interpretation of Palpatine from Return of the Jedi when playing Darth Sidious, the Chancellor's Sith alter ego, but created a pleasant, charming character in Palpatine's public persona.