Ian McDiarmid
Ian McDiarmid (born 11 August 1944) is a Scottish actor and director best known for portraying Emperor Palpatine in the Star Wars film series. He has received an Olivier Award for Best Actor and a Tony Award for Best Featured Actor in a Play for his performances. Wikipedia
Known for
Star Wars: Episode VI - Return of the Jedi 
Star Wars: Episode I - The Phantom Menace 
Star Wars: Episode III - Revenge of the Sith 
Star Wars: Episode II - Attack of the Clones 
Star Wars: Episode IX - The Rise of Skywalker 
The Lost City of Z 
Dirty Rotten Scoundrels 
Dragonslayer 
Britannia 
Gorky Park 
Restoration 
Obi-Wan Kenobi: A Jedi's Return 
The Awakening