Darth Talon was a female
There aren't many Sith Lords in Disney's canon, and only one of them is female—Master Shaa, the First Lady of the Sith.
The term "Sith Lord" generally encompassed members of both sexes, although some female Sith such as Lumiya, Tahiri Veila, Olaris Rhea, and Vestara Khai were styled Sith Lady. Originally, "Sith Lord" referred to a high-ranking member of the Sith Order's society.
Darth Shaa was a female humanoid Sith Lady with the title of Darth. After hearing of a Force-sensitive sculptor named Momin who had been imprisoned by his people, Lady Shaa went to free him, and made him her apprentice. Eventually, she was slain by her apprentice. She carried two red Sith lightsabers.
Lady Vader was a clone of Jedi Padawan and Dathomiri Witch Minafe Felis. The clone's actual designation was LV-beta-1. The Sith Acolyte also bore the self-created title of Dark Maiden of the Sith and served the Galactic Empire in the years following the Battle of Endor.
Who plays Inquisitor Reva in Obi-Wan Kenobi? Moses Ingram has been cast in the role of Reva. Viewers may be familiar with her work as Lady MacDuff in The Tragedy of Macbeth and as Jolene in Queen's Gambit. Her character Reva is described as ruthless.
Fans, it's time to meet Lady Shaa - the first FEMALE Sith Master in the new Star Wars canon. The Sith Master makes her debut in Darth Vader #22, the much anticipated story that started by bringing Vader face-to-face with the spirit of Sith Lord Momin, added to the Star Wars movie canon just as recently.
Darth Shain, headmaster of the Korriban Temple, took notice and convened with the Dark Councilor and Dark Lord of the Sith Darth Shane McMahon, who decided to confer the title of Sith Lord to the young apprentice at the age of 11, making him the youngest Sith Lord in the history of the Sith.
Emperor Palpatine/Darth Sidious
Villains like Kylo Ren and Darth Vader sometimes feel the pull to the light, but Darth Sidious, also known as Emperor Palpatine, is the embodiment of pure evil.
Many Sith Lords chose to add "Darth" to their name, so much so that the word is considered synonymous with the dark side of the Force in some circles. It was also taken to signify giving up one's old life. Such examples are Anakin Skywalker becoming Darth Vader, or Jacen Solo becoming Darth Caedus.
The only thing keeping them from destroying themselves is their hatred of everyone else. And those "kings" of theirs. Captain Malcas. Sith King (or Sith Queen for female holders) was a title endowed to the most powerful Sith Lords holding the positions of Darth.
One of the most significant figures of that period was Darth Revan, a Jedi who turned to the dark side and established a Sith Empire with his friend Darth Malak, who ended up betraying him.
Originally Answered: Are the Sith Lords in Star Wars allowed to marry ? Yes, it is. Following the Rule of Two, it may even be beneficial for the master to have their apprentice marry. Their spouse's death at the hands of the Jedi or an enemy of the Sith (or a cleverly hatched plot by the master?)
By 44 ABY, the true Sith species in the Empire were believed to have gone extinct due to the interbreeding process. Characteristics shown would be determined depending on how much Dark Jedi or Sith blood an individual possessed due to interbreeding.
Darth Vectivus was created by Aaron Allston for the first novel of the Star Wars: Legacy of the Force series, Legacy of the Force: Betrayal. He appeared as a spirit to Nelani Dinn and served as a platform for Lumiya to convince Jacen Solo to become Darth Caedus by showing him that not all Sith were necessarily evil.
It is possible for a player Sith Warrior or Sith Inquisitor to be a Light Sith. In the Inquisitor's case, their approach leads them to earn the title of Darth Imperius, due to their light-sided actions being viewed as pragmatic acts that serve the Empire in the long run.
While their stories are similar, Darth Revan went even further than Vader. Whereas Vader bowed to Darth Sidious, Darth Revan was so powerful that he bowed to no one, becoming the sole leader of the Sith. He was able to do what Vader did but even greater.
In the Star Wars Universe, it's hard to deny Darth Vader's greatest enemy was the Jedi Order. Sure, he had enemies such as Qi'ra, the Crimson Dawn and Doctor Aphra. But few came close to truly defeating him, other than Obi-Wan Kenobi and in time, his son, Luke Skywalker.
Even though Kylo Ren uses a red lightsaber, harnesses the dark side of the Force, and wears a cape, he is not a Sith. Because of that, he can never hold the title of Darth.
DARTH SION : THE IMMORTAL SITH LORD WHO MASTERED PAIN AND DEATH Star Wars Theory. DARK SIDE FRIDAY - Darth Sion is definitely one of the most powerful Sith Lords. Sion's deep pain and rage channeled the Dark Side allowing him to cheat death.
As the first Dark Lord of the Sith, Ajunta Pall founded the first Sith Empire and expanded it onto other worlds.
Most likely not commonly known by many casual Star Wars is that, at least in Legends, the Sith had their own “chosen one” prophecy and that the central figure in it was believed to have been the Sith Lord, Darth Bane.
The Eternal Twins (Arcann and Thexan)
These Force-sensitive brothers were trained from childhood to be warriors by their father, Emperor Valkorion (or Vitiate, as he's known to the Old Sith).
According to Star Wars Legends content, the first Sith was a former Jedi Master, Ajunta Pall, who became a so-called Dark Jedi, or “Fallen” Jedi. As the name implies, these Force-sensitives chose to practice the Dark Side, and rejected the Light Side of the Force.