This cosplayer is dressed as the sexy A.I. program Cortana from Halo. This costume is a unique body-painted design- look at the swirls in the paint on her skin.
Kitana is one of the warriors from the original Mortal Kombat video game series. Her costume has evolved a bit over the years (it used to be much more plain!). But she has always had the sweet kitanas that she uses to perform her fan throws.
Dark Link is the evil version of Link-the hero from Zelda. Dark Link sometimes appears as a boss battle in some of the Zelda games. This cosplayer has the look down perfectly, and it will turn heads!