From Wikipedia, the free encyclopedia. Luke Bracey (born April 26, 1989) is an Australian actor, best known for his role on Home and Away as Trey Palmer. He also appeared in the 2011 film Monte Carlo, and as Aaron on Dance Academy. In 2013 Luke played Cobra Commander in G.I. Joe: Retaliation replacingJoseph Gordon-Levitt from the first film. In March 2013, Bracey signed on for the male lead role in the ABC drama pilot Westside produced by McG and developed by Ilene Chaiken. He starred in the 2014 films The November Man and The Best of Me.