The Sith are the main antagonists in the fictional universe of the Star Wars franchise. They are the antithesis and ancient enemies of the Jedi. The Sith Order is depicted as an ancient cult of warriors who draw strength from the dark side of the Force and use it to seize power by any means necessary, including terrorism and mass murder; their ultimate goals are to destroy the Jedi and rule the galaxy. The various antagonistic factions in the franchise, namely the Confederacy of Independent Systems, the First Galactic Empire, the Imperial Remnant, and the First Order, all originated with the Sith. Sith, known individually as Sith Lords, are, by nature, ruthless. At any point a single individual assumes absolute authority amongst their kind and is granted the honorific Dark Lord of the Sith. Sith culture is based on perpetual treachery and betrayal. The fate of Sith Lords is, typically, to be murdered and replaced by their own apprentices. Sith teach their apprentices to revere the dark side of the Force, to give full reign to aggressive emotions such as rage and hatred, and to believe that others are expendable in the pursuit of power, thus making the Lords' demise inevitable.
Like the Jedi, the Sith use the lightsaber as their traditional weapon, a device that generates a blade-like plasma powered by a kyber crystal. In contrast to the Jedi, who primarily use blue and green lightsabers, the usual color for a Sith lightsaber is red, born of an unnatural corruption of the kyber crystal through the dark side's malignancy, causing it to "bleed". This even affects the sound of ignition, with a harsher hiss.
The Sith nearly became extinct at the Battle of Ruusan, one thousand years before the Galactic Civil War, but they continued to precariously exist as two Dark Lords at one time: a master and an apprentice.
