Sam Witwer

Samuel Witwer (born October 20, 1977) is an American actor and voice actor. He is best known for voicing Darth Maul in the animated series Star Wars: The Clone Wars, and Palpatine and Darth Maul in Star Wars Rebels. He was also the reference model for Darth Vader's apprentice, Starkiller in the Force Unleashed video games  He will play Jacob in Once Upon a Time.