Xûr offered the Mask of the Third Man on his first visit to the tower and the first thing that came to mind was Splinter Cell! I don't know if I'm being mental or something but is it a reference to Sam Fisher? I know some Hive units have the same 3 green eye combination but "the Third Man" reminds me of Third Echelon... And the quote "It wasn't me. It was the Third Man." Would fit with the stealth capabilities of Sam Fisher. What do you think?