Sean Arnfinson: Sean Arnfinson. Actor: Stargate SG-1. Sean Arnfinson is known for Stargate SG-1 (1997), 12 Monkeys (2015) and Nikita (2010).
Known For: Stargate SG-1 (Military Candidate #2), 12 Monkeys (Acolyte), Nikita (Agent), The Expanse (Boarder)
