hey have u ever had the question, what are the knights of ren? well my theory is that they are ones trained by luke who joined the dark side with ben solo , ben established that name from and ainchent sith story from the siege of malachor of a fallen sith and he used that light saber and ben came a cross the broken cyristal that the aincent one used and he forged the lightsaber. Then every other knight had to chose a weapon that they are most best at and it didnt have to be a light saber. they then terrorized the galaxy as a legion of the first order and are conquering new planets. those are my theories and stay tuned for another blog post!