Samuel Stewart "Sam" Witwer (born October 20, 1977) is an American actor and musician. He is known for playing Crashdown in Battlestar GalacticaDavis Bloome in Smallville, Aidan Waite in Being Human and Ben Lockwood in Supergirl. He has voiced Starkiller in Star Wars: The Force Unleashed and in Soulcalibur IV, the Son in Star Wars: The Clone Wars and Emperor Palpatine in Star Wars Rebels, both series of which he voices Darth Maul.

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