Sullivan StapletonSullivan 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 FilmographyAmerican Renegades (2017)Blindspot (2015)300: Rise of an Empire (2014)Kill Me Three Times (2014)The Hunter (2011)Animal Kingdom (2010)Strike Back (2010)December Boys (2007)Darkness Falls (2003)