Tahmoh Penikett
Tahmoh Penikett ([ˈtaʔmo] /ˈpɛnɨkɨt/; born May 20, 1975) is a Canadian actor. He is known for his roles as Karl "Helo" Agathon on the Sci Fi Channel's television series Battlestar Galactica, his role as Gadreel in CW's Supernatural and as Paul Ballard in Joss Whedon's Dollhouse.