Ian McDiarmid still has trouble wrapping his head around Star Wars Episode IX's familial revelations about the Emperor.

Ian McDiarmid revealed how George Lucas planned to have Emperor Palpatine's Star Wars show feature the legendary Sith Lord Darth Plagueis.

Though he is one of few characters to figure into the whole saga, 'Star Wars' actor Ian McDiarmid says Palpatine 'wasn't ...

Ian McDiarmid has defended his controversial return as Emperor Palpatine (a.k.a. Darth Sidious) in Star Wars: The Rise of ...

Ian McDiarmid has been playing iconic Star Wars villain Emperor Palpatine for 42 years, and in a new interview, the actor ...