Star Wars depicts the epic fight between a series of Jedi and the villainous Emperor Palpatine, who acts as the overarching villain of the Skywalker Saga. After Palpatine's defeat in Return of the Jedi and again in The Rise of Skywalker, the franchise has continued to show just how big an impact he had on the galaxy in series like Ahsoka and The Mandalorian. As the most powerful villain in the films, Palpatine has come to represent all of the Sith through his devious plans to take over the galaxy and destroy the Jedi once and for all.
Source：https://www.cbr.com/star-wars-palpatine-sith-rule-of-two/
