Who taught Darth Sidious?

Darth Plagueis (pronounced/pleɪgəs/) was a male Dark Lord of the Sith and the master of Darth Sidious. He acquired ... Although Palpatine was never confirmed to be Plagueis' apprentice in the movie itself, a link to the official encyclopedia on StarWars.com did refer to Sidious as having been "trained by Darth Plagueis.". read more

Darth Sidious (more commonly known as simply The Emperor) was supposedly trained by a powerful Sith named Darth Plagueis, whom he subsequently killed when no more power could be gained from his teachings, as is the Sith way. He mentions this in Episode 3 ‘Revenge of the Sith’. read more

Palpatine, also known as Darth Sidious, was a Force-sensitive Human male who served as the last Supreme Chancellor of the Galactic Republic and the first Emperor of the Galactic Empire. read more