Jar Jar conquers all.
[spoiler]Darth Plagueis is Palpatine's master, which Palpatine had supposedly killed. It's rumoured that Plagueis will return in Episode VII.[/spoiler]
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Kylo Ren isn't a Sith Lord. He is pretty much a sith padawan at this point, not fully trained. Luke was training him when he went to the darkside & he was trained by that big dude but his training wasn't complete. That's noticeable by Rey who wasn't trained in the force or with a lightsaber nearly killed him.