In Batman: Arkham Origins, Copperhead is a female assassin sent to collect the bounty on Batman's head. And based on this this new behind-the-scenes trailer showcasing her introduction, it appears her preferred fighting style is "pro wrestling." She nailed Batman with a quite nice hurricanrana there.
The other notable part of this trailer is how it illustrates just how blurred the lines between film-making and game-making have become. They had to build a set, for Pete's sake!