Sullivan Stapleton (born 14 June 1977)] is an Australian actor who is best known for his roles in the SKY (BSkyB)/Cinemax/HBO television series Strike Back and the 2010 Sundance Film Festival selection Animal Kingdom.
Stapleton played the lead role, Greek leader Themistocles, in the film 300: Rise of an Empire (2014). He was honored on 24 October 2013 with a Breakthrough Award at an exclusive Australians in Film Benefit Dinner held in Los Angeles.
After a space station, The Skeld, is damaged, 15 astronauts are sent up to repair it. When one of the crew members is mysteriously murdered, the rest of the crew must band together to find the “imposter” that is killing them.