While subjectivity exists, Darth Sidious (Emperor Palpatine) is widely considered the most evil Sith ever, due to his masterful manipulation leading to the Republic's fall, the Jedi Order's destruction, the rise of the Empire, his immense power, and his pure, irredeemable lust for absolute control and terrorizing the galaxy, with some Legends contenders like Vitiate (Darth Nihilus/Tenebrae) rivaling him in sheer scope of destruction.
Palpatine was always 100% evil, he had no nobel goals or redeeming qualities. His quest for ultimate power and plan to establish a totalitarian regime begun long before he found out about the Vong's existance.
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Darth Sidious
Darth Sidious is easily the most powerful Sith to ever live. He was able to almost single-handedly start a war, take control of the Senate, convert countless people including Anakin Skywalker to the dark side, overthrow the Jedi, and become emperor of the Galactic Empire.
Darth Vectivus. He basically got all the power he wanted and then retired to live with his family and friends and died peacefully, none of the Sith backstabbing.
Physically, Vader is stronger due to his cybernetics, and has greater endurance feats, and while I do believe Nihilus is more agile, I'm more than sure Vader can keep up. As duelists, Nihilus is a bit above average but not in Vader's level. So with all that said, I declare Darth Vader, the battered and broken victor.
Darth Maul was stronger than Obi Wan, he proved that when he killed Qui-Gon but he was over primed and traded being a showman for his life. Another contender for the weakest Sith could be Count Dooku, or has he's also known Darth Tyranus.
The Lost Twenty, also known as the The Lost, was a name given to the group of twenty Jedi Masters who left the Jedi Order throughout its history. According to Yula Braylon of the Jedi High Council, the Lost Twenty became disillusioned with the Jedi way of life.
DARTH SION: THE IMMORTAL SITH LORD WHO MASTERED PAIN AND DEATH.
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Villains who are Pure Evil are the worst of all villains: an abhorrent monster who is completely atrocious and irredeemable by the standards of their work. For this kind of villain, doing evil for them is as natural as breathing.
The canon answer is that yes, Vader is much stronger than Anakin ever was. But he also is much less strong than what suitless Anakin would have become. He lost his potential, so to speak, but still became much more powerful.
Chastened by his former Master on the principle of the Rule of Two, Maul abandoned his claim to the mantle of the Sith, focusing instead on building an empire of his own—the Crimson Dawn—by controlling the criminal underworld.
I genuinely believe ahsoka was one of yoda's favourite Jedi ever!!! : r/StarWars. Unofficial community for Star Wars, an American epic space opera franchise, created by George Lucas and centered around a film series that began with the eponymous 1977 movie.
In Star Wars lore, Order 37 was a grim Clone Trooper contingency plan to capture a wanted individual (often a Jedi) by taking a civilian population hostage, locking down the area, and threatening mass execution if the target wasn't surrendered, making it a horrific tactic used by the Empire to force Jedi compliance. It was considered more brutal than Order 66 because it targeted civilians directly, forcing Jedi to often turn themselves in to save innocent lives, as seen on planets like Bellassa.
As the first Dark Lord of the Sith, Ajunta Pall founded the first Sith Empire and expanded it onto other worlds. Pall had a citadel built for himself to rule from on the planet Ziost. Pall eventually died after serving the Empire for many decades, but his Empire lived on.
In canon it was Kirak Infil'a , Cere Junda, Obi-Wan and Lord Momin . All messed him up quite badly with Kirak winning round 1 but losing round 2 and Momin cutting off his arm. Obi-Wan actually beat Vader. In Legends it was Shaa Koon, An'ya Kuro, a clone of Maul and Galen Marek.
"Darth Plagueis was a Dark Lord of the Sith, so powerful and so wise, he could use the Force to influence the midi-chlorians to create life. He had such a knowledge of the dark side, he could even keep the ones he cared about from dying."
Surik, Marr and Mandalore confronted and killed Nihilus on the bridge, after which the group left the Ravager just before it exploded.
A lightsaber could probably cut the Hulk but that's not the problem. The problem is that the Hulk can regenerate his body to an insane extent and now with knowledge of what the Saber can do he can change his tactics.