" The black mask, with its slittled forehead and thick, snoutlike breathing apparatus, covered the face of the man he knew as Kylo Ren. Once, he had known the face behind the mask. Once, he has known the man himself. Now, to Lor San Tekka, only the mask was left. Metal instead of a man. "

― Alan Dean Foster , The Force Awakens (Star Wars: Novelizations, #7)