With the dark side, he could hold together his decaying body. Though excruciatingly painful, and requiring endless concentration on the anger within him, it gave him his powers of immortality. When struck down, Sion could call upon his anger, hate, and pain to come alive again.
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.
Darth Sion is one of the two secondary antagonists (alongside Darth Nihilus) of the 2004 video game Star Wars: Knights of the Old Republic II: The Sith Lords. He was a human male Sith Lord who reached the title of Dark Lord of the Sith and fought in various conflicts against the Jedi Order and the Galactic Republic.
Nihilus became so absorbed by the dark side of the Force and his hunger that his physical body began to erode. Knowing that he would succumb to death if he did not act soon, Nihilus ripped his spirit from his body and encased it in the armor he wore, thus allowing the dark side to consume his useless body.
At the end of the First Jedi Purge Nihilus was killed aboard his flagship, the Ravager, by Meetra Surik, his former apprentice, Visas Marr, and the current Mandalore, Canderous Ordo, leaving his mask as a gruesome reminder of his reign as the Lord of Hunger.
Nihilus by a long shot. Not only did he survive the Mass Shadow Generator, he literally preyed on entire world to satisfy his hunger for the force. Palpatine, on the other hand, was defeated multiple times and taken out my Rey, someone of minimal power compared to other Jedi.
His complete disregard for caution ultimately cost him his life, as he was captured and summarily executed by Demacian forces. The Demacians thought that the beheading of Sion would be the end of his bloodthirsty ways. Death, however, was merely the beginning of Sion's rise to power.
Nihilus just seems so powerful in the force that he would destroy the others. Sion is basically unkillable but he utilizes strength and traya and nihilus can just keep beating him in the force.
Darth Sidious was the Sith Master who trained several apprentices during his reign as the Dark Lord of the Sith. Approximately a millennium before the Invasion of Naboo, the Sith's greed for power led to infighting, which caused them to be defeated and nearly destroyed by the Jedi.
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.
Darth Andeddu, also referred to as the Immortal God-King of Prakith, was an ancient humanoid male who reigned as Dark Lord of the Sith, and was dubiously thought of as the forebear of the "Darth" title.
Now, Darth Vitiate lived for around 1,500 years, which is by far the longest lifespan of any Sith Lord on this list. With a major appearance in Star Wars: The Old Republic, Darth Vitiate presented himself as one of the big bads in the Star Wars universe.
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.
I'd give the most angry Sith title to Darth Sion. “Three lords stood above all others: Darth Nihilus, whose hunger devoured all life around him; Darth Sion, whose shattered body was held together by hatred; and Darth Traya, once a Jedi Master but now the Lord of Betrayal.
The List of Deaths Wiki lists Darth Nihilus' kills at 6,556,396,720 kills.
Power. Sion is powerful enough to draw the eye of Darth Traya, a respectably powerful Sith Lord, even from across the galaxy: Surviving the Sith backstabbing following the Jedi Civil War, Sion's abilities draw the eye of Revan's former master, the powerful Darth Traya.
As a Sith Marauder in the Great Sith War, Sion fought for Exar Kun's Sith Empire until the day he was struck down. Rather than die, though, Sion found that by calling on his pain, anger, and hatred, he could rise from certain death and achieve immortality, at the cost of all-consuming agony.
Clark was born without legs due to a rare birth disorder that affects fetal development in about 1 in 60,000 live births every year. His mom was in and out of prison in Ohio, and Clark was put into foster care. His best protection, his best way to escape and survive, were those two hands.
On the knife in Sion's head - "The knife was part of his final resurrection ritual, the equivalent of putting a key into an ignition."
Darth Nihilus was an extremely powerful Sith Lord, and most likely in the top 10. His draining feats are directly comparable, or arguably greater than Vitiate's, which automatically makes him an absolute monster. His weakness however, was his hunger itself.
Jedi like Luke Skywalker and Obi-Wan Kenobi have long stood as light against the darkness. But the record Sith-killer is actually Darth Bane himself. Darth Bane, founder of the Rule of Two, killed more Sith than any Jedi in the history of the Star Wars galaxy.
He devoured entire planets a number of times, relieving his hunger for a time and allowing himself to grow more and more immersed and powerful in the Dark Side. As Nihilus's hunger grew, so too did his power and he finally became stronger than Traya and Sion.