Sith

Within the franchise narrative summarized in the sources, the Sith are depicted as an ancient cult or order of warriors and Force-users who institutionalized devotion to the dark side of the Force. Historically within the narrative they grew to be a galaxy-spanning political-religious current; after coming close to extinction following the Battle of Ruusan roughly one thousand years before the Galactic Civil War, they survived covertly as a line of two Dark Lords organized as a master and an apprentice, later resurfacing as the ideological progenitors of major political regimes such as the Confederacy of Independent Systems, the Galactic Empire, the Imperial Remnant, and the First Order.

Sources do not present a single physical type for members of the order; Sith are a cross-species order of Force-sensitive individuals rather than a single race. A consistent visual association is their use of lightsabers as the traditional weapon, with Sith lightsabers typically depicted with red blades. The red color is explained in the cited material as the result of an unnatural corruption of kyber crystals by the dark side — a process described as causing kyber crystals to 'bleed' and produce red blades.

Sith are Force-sensitive and employ the dark side of the Force as their means and ideology. Ethically they embrace aggressive emotions — rage, hatred, and the pursuit of personal power — and use Force abilities toward domination, political seizure, terrorism, and mass murder as means to destroy the Jedi and rule the galaxy. Institutionally they practice a master–apprentice model characterized by perpetual treachery and betrayal; sources describe the fate of Sith Lords as often being death at the hands of their own apprentices. Specific named Force techniques are not enumerated in the provided excerpts, but their behavior and tools (lightsaber combat, kyber crystal 'bleeding') are emphasized.