Claim: Samuel Witwer is a son.

Samuel Stewart `` Sam '' Witwer -LRB- born October 20 , 1977 -RRB- is an American actor and musician . He has portrayed Crashdown in Battlestar Galactica , Davis Bloome in Smallville , and vampire Aidan Waite of the US/Canadian remake of BBC 's supernatural drama series Being Human on Syfy in the US and Space in Canada . He also voiced protagonist Galen Marek/Starkiller in the multimedia project Star Wars : The Force Unleashed , as well as The Son and Darth Maul in Cartoon Network 's Star Wars : The Clone Wars and Emperor Palpatine as well as Maul in Disney XD 's Star Wars Rebels .