Sith (Earth-2356)

"Once more the Sith will rule the galaxy, and we shall have peace."

- Darth Sidious, to Darth Vader

The Sith, also referred to as the Sith Order, was an ancient religious order of Force-wielders devoted to the dark side of the Force. Driven by their emotions, including hate, anger, and greed, the Sith were deceptive and obsessed with gaining power no matter the cost. The order reached the apex of its power under Darth Sidious, the Dark Lord of the Sith who achieved his order's goal of galactic conquest after a millennium of plotting. Within a generation, however, the death of Darth Vader would mark the end of the order of Sith Lords.

Source

 * https://starwars.fandom.com/wiki/Sith.