Rogue One and The Force Awakens

One of the wackiest theories on the web is that Rogue One will be the one to present the beginning of the Knights of Ren. And this theory is based on the official pic released for Rogue One and Rey’s flashback – 2 of the characters from the former resemble 2 of the characters from the later.
This theory is also based (partly) on what Adam Driver said about the Knights of Ren: “a group that existed before him, that he was a part of. Their place within everything is maybe more of a satellite group than I would say … This is really tricky.†(via Slash Film)
And this is indeed tricky – even if, in a way, it shows how grey the grey area really is. If the bounty-hunters sent after the Death Star plans survive, they may switch sides (in a way) and become adepts of Vader. Maybe they witness his tremendous power and are seduced… who knows?
