Matthew "Matt" Nable (8 March 1972) is an Australian actor, writer and former rugby league player.After playing in the 1999 Premiership Cup for Man-Warringah, he wrote and acted in the 2007 rugby league drama The Final Winter.Matthew Elite and also acted in movies like Killer Riddick. His most recent work, in 2014-2015, was on The CW's Arrow as the villain Ra's al Ghul.