who played emperor palpatine?
Ron Prather Ian Abercrombie Ian McDiarmid
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 Sheev Palpatine ( also known as Darth Sidious or simply The Emperor ) is a fictional character of the Star Wars universe , mainly portrayed by Ian McDiarmid . In the original trilogy , he is depicted as the aged , pale @-@ faced and cloaked Emperor of the Galactic Empire . In the prequel trilogy , he is portrayed as a charismatic Senator from Naboo who uses deception and political manipulation to rise to the position of Supreme Chancellor of the Galactic Republic . 

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 Ian McDiarmid as Chancellor Palpatine / Darth Sidious : A former senator of Naboo who has recently been elected Supreme Chancellor of the Galactic Republic . 

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 When the original Star Wars trilogy was filmed , the Emperor was unnamed and his throne @-@ world unidentified . The name would not be used in film until the prequel trilogy and the first mention of the name Palpatine came from the prologue of Alan Dean Foster 's 1976 novelization of A New Hope , which detailed the Emperor 's rise to power . Foster writes , 

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 Palpatine was not given a first name in any canonical or " Star Wars Legends " sources until 2014 , when the character 's first name — Sheev — was revealed in the novel Tarkin , written by James Luceno . The Lucasfilm Story Group approached Del Rey Books and asked if they wanted to use the name , which was created by George Lucas , in the Tarkin novel , to which Del Rey agreed . 

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 Palpatine has appeared in other works , outside of the main films , including the Star Wars Expanded Universe . The Expanded Universe ( also known as the EU ) encompasses all of the officially licensed , fictional material of the Star Wars saga , outside of the seven feature films , The Clone Wars film and series , Rebels series produced by Lucasfilm , and the 2015 Marvel Comics . The expanded universe includes books , comic books , video games , toys , and other assorted media . The EU is no longer official canon . 
