We still do not know a lot about the new Star Wars movie coming this year. What we do know is some of the cast members. The Oscar-winning Lupita Nyong'o is confirmed to play Maz Kanata, after the interview with "Vanity Fair". She is rumored to play a pirate alien. This is just a rumor, but it is confirmed that she will play some sort of alien.
We know she will be doing motion capture (as in picture above). Therefor we are sure she is playing an alien.
There has been some leaked photos of her, and I do believe it is real.
She really do look like something that JJ would put in a Star Wars movie.
Have we already seen her in The Force Awakens trailer?
After shooting up the colors in the screenshot of an alien handing Leia Anakin's (or Luke's) lightsaber, it looks like it could be this character.