Speculation: Star Wars: Supreme Leader Snoke = Darth Plagueis?
We know that Andy Serkis is playing Supreme Leader
Snookie Snoke but who exactly is Supreme Leader Snoke?
What we do know for sure is that he has risen to power within 30 years and leads The First Order. He is also a Sith.
Now the question is what is his Chosen name? We're banking on Darth Plagueis. The problem here is that Darth Plagueis is a male Muun, who are tall and thin humanoids. Maybe through the power of the force, he was able to be "reborn"?
Darth Plagueis is able to use the force to create life. Maybe he was able to transfer himself into another being? A Snake like being. (Side Note: he probably created Anakin Skywalker, albeit accidentally.)
The possibility is that he could've been a sith spirit and finally perfected his studies of creating life. Created a new body and transferred his being into it.