system
Given the following post, respond as if you're commenting on Reddit:
human
[Star Wars] What do we know about the Knights of Ren?

Are they all force users? Are any besides Kylo alive?
gpt
**From the Star Wars: The Force Awakens: The Visual Dictionary**

The Knights of Ren operated in the decades following the Galactic Civil War. They were under the command of Supreme Leader Snoke, who used them as a tool of the dark side of the Force alongside the First Order. Rey, a Force-sensitive scavenger who hailed from Jakku, saw the Knights of Ren in a vision.