Is it possible that Luke is Kylo Ren? In this concept art there is a grave robber stealing darth Vader's mask from the sith vault.
And we all saw the star wars 7 3rd trailer. Where Kylo Ren has collected Vader's helmet. Stating "I will finish what he started"
And with Luke not appearing anywhere in any poster, trailer , or anywhere else is it too much to think that Luke might be Kylo ren? We know that the skywalker famiky has had a hard time deciding their side, dark or light, and luke makes a connection with his sith father at the end of star wars 6. The only thing I see wrong with this theory is that Kylo Ren has been heard speaking and so has Luke in the trailers. And they both had different voices.