This is just some awesome fan art I found for a character named Tali Zorah Vas Normandy. She is a part of the Mass Effect series, and throughout the game you never actually see her face behind the mask. This was Steve Goads vision of Tali Zorah. Tali is of the alien species Quarian.
The Quarians are a nomadic species of humanoid aliens known for their skills with technology and synthetic intelligence. Since their home world Ranoch was conquered, the quarians live aboard the Migrant Fleet, a huge collection of starships that travel as a single fleet.
Approximately three hundred years before the events of Mass Effect, the quarians created the Geth, a species of rudimentary artificial intelligences’s, to serve as an efficient source of manual labor. However, when the geth gradually became sentient, the quarians became terrified of possible consequences and tried to destroy their creations. The geth won the resulting war and forced their creators into exile. Now the quarians wander the galaxy in a flotilla of salvaged ships, secondhand vessels, and recycled technology.