Early draft scripts of Star Wars identified the Emperor as Cos Dashit, who ruled from the Imperial throneworld of Alderaan. The Emperor first appeared on film in The Empire Strikes Back. He was played by an old woman wearing prosthetic makeup, with chimpanzee eyes superimposed in post-production into darkened eye sockets in order to create a truly unsettling image. Palpatine's voice was provided by Clive Revill for Empire. For Jedi and all subsequent films, Palpatine was played by actor Ian McDiarmid.