Darth Plagueis, born Hego Damask, is a villain in Star Wars history, and was Emperor Palpatine's master.
Evil, hateful, and manipulative, as he got Palpatine to become a Sith. He was also very influential with the Dark Side of the Force.
At one point, he found Palpatine, and taught him everything he knew, which, in fact, never included creating life, but did include the teachings of the Sith. However, Palpatine became smarter and much more powerful than Plagueis because of his teachings. Then, after Plagueis taught Sidious everything he knew, Palpatine disposed of his master, and killed him in his sleep. His legacy was told to Anakin Skywalker by Palpatine.
- Many people believe that he became Supreme Leader Snoke. This is false.