Here is one of the Knights of Ren, an organization affiliated with the Supreme Order. He was born after the Battle of Endor around 5 ABY. As Ben was sensitive to the Force, his mother sent him to his uncle, Luke Skywalker, for training. He was one of several of his students, where he trained to become a Jedi knight. Luke, seeing him as a powerful, dangerous force, decided to kill him, but eventually backed down.