Darth Sidious, publicly known as Sheev Palpatine from Naboo, became the Dark Lord of The Sith after betraying and murdering his Sith Master Darth Plagueis. Sidious was the Dark Lord of the Sith during the last years of the Republic and the rise of the Galactic Empire.
Truly, the most powerful Sith Lord was Darth Sidious, better known in his public persona of Chancellor (later Emperor) Palpatine. Through cunning and manipulation, Sidious killed his master to claim the mantle of Dark Lord of the Sith.
killed by an Imperial strike team, his dark side, like many Seth before him, refused to let go of life.
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.
Star Wars fans adore Darth Nihilus, and for good reason. His skeletal-like mask and dark robe make for an iconic Sith, yet it's his brutality, ruthlessness, and immense power that make Nihilus a fan favorite.
Darth Plageuis is one of the most famous Sith Lords in the Star Wars Universe. Plageuis was the mentor and master to Darth Sidious, and he was spoken of to Anakin in Star Wars: Revenge of the Sith.
That title goes to Darth Tenebrous after the establishment of the Rule of Two. Before 1000 BBY, in Legends, Darth Vitiate ruled for about 1350 years between 4980 to 3630 BBY and lived on when other Sith fought and killed each other for the opportunity of power and the Emperor's throne during this era.
Darth Sidious was able to cheat his upcoming death by transferring his spirit into a clone body while falling into the reactor core of the second Death Star. He later sought to prolong his existence by futilely manipulating his grandchild Rey into killing him so he could live further by possessing her body.
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. Instead, he was just a chaotic mess of the dark side (until he eventually found his way back to the light).
Darth Malak betrays Darth Revan and becomes Dark Lord of the Sith. Force bond forged between Revan and Bastila Shan.
Revan has incredible will, which was what allowed him to endure centuries of torture from Vitiate, though he was not unscarred. His mind started to become twisted between the light and dark sides and after his light side left him, Revan was completely fueled by anger and hate.
As impressive as Vader's battle tactics might be, if he and Revan make a stand with comparable armies, Revan is likely to be victorious. So, this point goes to Revan as well.
Master Yoda has risen above all others to claim the top spot as the most powerful Jedi of all time and the true chosen one according to IGN's audience. He won pretty handily as well, as he was victorious in 89,756 of his 95,243 battles and had a win percentage of 94.2%.
18 Galen Marek
Galen Marek is the only one who came close to destroying the Sith Lord, thanks to his vast knowledge of Vader's fighting tactics through the many hours they trained together.
That said, Vitiate, sometimes better known as the Sith Emperor, is often thought to have been stronger than Darth Sidious thanks to his mastery of the Dark Side of the force which granted him a ridiculously long life.
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.
Their reign ended when Vader sacrificed himself by destroying his master, rendering the Sith extinct through the deaths of the final Dark Lords.
Seeking death, Sion went into battle against the Jedi but continued to survive the encounters. He became convinced he was immortal as he built up a greater and greater tolerance for pain. Eventually, Sion was struck down, but he did not die.
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.
The Emperor Vitiate was a Sith Lord who successfully gained near immortality by draining the life force of an entire planet, later attempting to drain all life in the galaxy, which would give him true immortality.
There are dozens of canon Jedi in the Star Wars universe. Opposing them stand the canonical servants of the Dark Side of the Force: The Sith. While many Sith Lords in Star Wars are mentioned, only six are detailed in canon: Bane, Plagueis, Sidious, Maul, Tyranus, and Vader.
You may be looking for Gormo, the Duros captain of Tweigar. N'Kata Del Gormo was a Force-sensitive male Hysalrian Jedi Master who lived during the times of the Galactic Republic. According to legend, he found and trained Yoda and a Force-sensitive Human friend.
Without question, the most powerful Force ability present in Star Wars is the Thought Bomb. It is created through an ancient Sith ritual where the Sith combine their dark side powers. If done successfully, the Thought Bomb can destroy all Force-sensitive beings unfortunate enough to be within the radius of its blast.
If it came to strategic prowess then most likely you'd find Sidious ahead. He was the one after all who managed to outsmart the entirety of the Jedi Order and Republic (minus the few individuals aiding him). And was then smart enough to keep any rivals in line or at a distance during his reign as emperor.