King of the Dead
From Tolkien Gateway
The King of the Dead is a term used in The Return of the King that could refer either to Aragorn or the King of the Dead Men of Dunharrow. It is only ever used as a cry made by the evil men that Aragorn's Army of the Dead rout from Gondor "the King of the Dead is upon us!".
In Peter Jackson's The Return of the King he interpreted the King of the Dead as the leader of the Dead Men who acts as a figurehead for them, with several lines of dialogue. He was played by Paul Norrell
