Dark Lord/Lady of the Sith

The Dark Lord or Lady of the Sith was the leader of the Sith Order, and in some cases the Sith Empire. The title carried an intimidating presence, with the announcement of the arrival of the Dark Lord or Dark Lady being considered an omen of death to many.

During the years after the destruction of the Galactic Empire, the notion of a "Dark Lord" was considered absurd by many people. It wasn't until Darth Amorosa finally realized that she was the most powerful Sith remaining in the galaxy that she adopted the title for herself. It was partially a point of pride, but also as a spiteful act of resistance against the Republic and the Jedi Order. During the First Order-Republic War, the Dark Lady was a rallying point for the few Sith apprentices and acolytes spread across the galaxy, and later became a rallying point for the people of the Outer Rim to rise up against the First Order.

Notable Dark Lords

 * Vitiate - Emperor of the Resurgent Sith Empire until being ousted on Ziost. Terrorized the galaxy in a quest for immortality.
 * Darth Revan - A Jedi corrupted by the Sith Emperor. Decimated the Republic and the Jedi Order for quite some time before being brainwashed back into a Jedi Knight.
 * Darth Acina - Empress of the Sith Empire after the conquest of the Eternal Throne. A long-standing ally to the Eternal Alliance.
 * Darth Bane - Creator of the Rule of Two, which led to the Sith working in the shadows for millenia.
 * Darth Sidious - Emperor of the Galactic Republic for twenty years. Destroyed the Jedi Order and held the galaxy in his grip before being defeated by his apprentice, Darth Vader.
 * Darth Amorosa - The Dark Lady of the Resurgent Sith Order. Notable for ending the millenia-long rift between the Jedi and the Sith, largely through marrying the Grand Master, and influencing events in the galaxy in such a way that it would become impossible for galactic dominance to ever be achieved ever again.

Trivia

 * Technically, Darth Mayrik would have been Dark Lady of the Sith after the destruction of Darth Sidious. However, as she never adopted the title, it remained unclaimed.