Born in 82 BBY on the planet Naboo to the aristocratic House Palpatine, Palpatine discovered the Sith at a young age as a collector of dark side artifacts.In 65 BBY, he met Hego Damask, a Muun businessman who was in reality the Sith Lord Darth Plagueis.Under Plagueis's manipulation, Palpatine killed his father and pledged himself to his new Master's dark side teachings as Darth Sidious.Palpatine lived a double life for many years, serving an untarnished career as Naboo's ambassador in the Galactic Senate while learning from his master and training a young Zabrak as the Sith assassin Darth Maul.He himself headed both the Galactic Republic and, secretly, the Confederacy of Independent Systems.The public leader of this splinter faction was former Jedi Master Count Dooku, Sidious' second apprentice as Darth Tyranus in the wake of Maul's presumed death on Naboo.
As Chancellor of the Republic and Dark Lord of the Sith, Palpatine orchestrated the outbreak of the devastating Clone Wars ten years after the Naboo Crisis.
A failed attempt by the Jedi High Council to arrest Palpatine ensued, and Skywalker pledged himself to Sidious's teachings as Darth Vader.
As billions perished in the war, the vast majority of Republic citizens rallied behind Chancellor Palpatine, giving him enough support to amend the Galactic Constitution in the name of security and transfer most of the Senate's executive authority to his own office.
In 19 BBY, following Tyranus's demise, Palpatine revealed his identity as Darth Sidious to the Jedi Knight Anakin Skywalker, telling that the dark side teachings that Plagueis had pursued could help Skywalker to save his wife, whom Skywalker had foreseen dying untimely.
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.
A Dark Lord of the Sith in the Order of the Sith Lords, recorded by history as the most powerful who had ever lived, his entire life was the culmination of a thousand-year plan to overthrow the Republic and the Jedi Order from within.