Ian McDiarmid Back As Emperor Palpatine

The mid-season return trailer for Star Wars Rebels brought with it many dramatic moments. Among them included bringing back Emperor Palpatine as a serious threat to the members of the Ghost crew. What makes the character's return even more exciting is that Ian McDiarmid is reprising his role as the character. It confirms a rumor that began circulating last year.
Executive producer Dave Filoni told Entertainment Weekly, “He is the one running everything and the evil of the land.