rumplestiltskin:

The costume really says a lot about him before he says anything. [Kylo Ren’s] helmet is unpolished and unfinished. It’s not refined. It’s shiny in parts and reflects back what it sees. These are all metaphors that you can’t really play, but it’s good information. His lightsaber, you got the sense that it was homemade, and it could spontaneously combust at any minute. It didn’t really seem like it was really reliable.