As the Star Wars: The Last Jedi post-mortem continues for writer-director Rian Johnson, he has begun to face questions about the lack of the Knights Of Ren in his movie. Ever since Adam Driver’s Kylo Ren stalked onto the screen in Star Wars: The Force Awakens, fans of the franchise have been curious about the shadowy, sinister group he leads – regarded as being the most lethal force available to Supreme Leader Snoke.