THE FIRST ORDER. A dark side warrior with a mysterious past, Kylo Ren was neither Jedi nor Sith, but a product of both sides' teachings. Once an apprentice of Luke Skywalker's, he killed his fellow students and drove Skywalker into exile, becoming a First Order warlord and servant of Supreme Leader Snoke.

Why is KYLO not a Sith?

Kylo Ren wasn't really a Sith by the standards of the new timeline. Palpatine, though he influenced Kylo Ren's development through Snoke, never formally trained Kylo. Rather, he belonged to a very different group that followed the teachings of the Dark Side of the Force: the Knights of Ren.

Why did KYLO become a Sith?

It is revealed that Ren is the son of Han and Leia, originally named Ben, and was once one of Luke's Jedi pupils. He was corrupted to the dark side of the Force by the First Order's Supreme Leader Snoke (Andy Serkis), and helped destroy Luke's new Jedi Academy.