Vader recently attempted to overthrow Palpatine in a daring attack against his master on Coruscant, but fails in Star Wars: Darth Vader #40 by writer Greg Pak, artist Raffaele Ienco, colorist Federico Blee, and letterer Joe Caramagna.
Did Darth Vader ever try to take down Emperor Palpatine? - Quora. Yes. An attempt that was quickly put to rest. He used an ability called beast control to manipulate the galaxys most powerful predator.
Did Vader want to overthrow the Emperor with Luke?
Despite Vader's seeming loyalty to the Emperor, Palpatine wanted to replace his servant with a new apprentice, while Vader plotted to overthrow the Emperor so he could rule the galaxy with his son. In the end, Luke surrendered himself to Vader on the forest moon of Endor.
Star Wars Legends, specifically the novel Dark Lord: The Rise of Darth Vader, explained that even though Vader was capable of killing the Emperor, he wasn't in good psychological condition to do so.
When Darth Vader Tried to Flex on Palpatine [Canon]
Did Vader ever disobey Palpatine?
For his disobedience, the Emperor punished Vader and resolved to teach him a lesson in the dark side of the Force, removing his cybernetic limbs and having him dumped on Mustafar by a squad of death troopers to either strengthen his Sith apprentice with pain or leave him for dead.
Who is more powerful, Darth Sidious or Darth Vader?
It was his destiny to bring balance to the Force and avenge the Jedi Order. His power was truly awesome, and he only became more powerful after his fall to the Dark Side. As Darth Vader, he was one of the strongest beings in the entire galaxy. But even then, he was never able to surpass his master, Darth Sidious.
Return of the Jedi, however, proved that Palpatine had a significant blind spot. There were plenty of warning signs Palpatine could have heeded that Vader might turn on him, and yet his ignorance and arrogance led to his decisive downfall.
He wasn't supposed to kill Luke; he wasn't even supposed to beat Luke. Vader's only goal in the fight was to make Luke lose control of his emotions and bring him closer to the dark side -- and that's exactly what happened.
The third film in the original Star Wars trilogy ends with Vader protecting his son, Luke Skywalker, by throwing Palpatine into the Death Star II's reactor.
Vader attacked Sidious with the Force, telekinetically slamming the Emperor into the wall and attempting to strangle him, though to no avail as Sidious shielded himself with his own powers.
With that being said, if Palpatine did, indeed, use Force-healing to keep Vader alive, he didn't appear to have given enough life force for it to take a toll on him -- and being as close as Vader was to death, Palpatine would have required a lot of energy to keep him alive.
Vader had lived most his life with Palpatine. He probably thought of him as a father figure. They were in constant contact with each other and planned and plotted every action to secure power. 90% of the time they got their way.
The way of the Sith may be for the apprentice to kill his master, but there was no way Darth Vader would've ever beaten Emperor Palpatine in a fight prior to Return of the Jedi. Darth Vader's electronic suit is very susceptible to electricity, and Palpatine is known for his uses of Force lightning.
Why was Darth Vader so weak in Return of the Jedi?
Granted that it had just been a year since their last match-up, but the body's deterioration can rapidly increase as someone gets older. Coupled with the fact that Anakin had long been reliant on his armor which means that in reality, he's in worse shape under his suit than he might appear in Return of the Jedi.
And despite Vader's weaknesses, it's not as if Luke was unskilled, as he spent plenty of time honing his connection to the Force after Star Wars: The Empire Strikes Back, and was likely the most skilled lightsaber-wielder Vader had faced in a long time.
The implication is clear - that this is Luke Skywalker at his peak, equal in power to Darth Vader but a champion of the light nonetheless - but Star Wars is yet to confirm that this was indeed the case.
Thus, while Qui-Gon was less powerful than the likes of Yoda and Mace Windu, Palpatine feared him more. In the simplest terms, he was a wild card, and with the Sidious executing an intricate decades-long plan to seize power and destroy the Jedi, a wild card was something he just couldn't afford.
Moreover, throughout the duel, Yoda continually adapts to and even matches Palpatine - forcing his enemy to constantly attempt new tactics. Palpatine clearly hated Master Yoda with a fierce passion, but he was under no illusions that the Grand Master would be easy to defeat.
Yep. Darth Maul didn't really say or show straight up that he "feared" Darth Vader, but he openly stated his belief that he could not defeat Darth Vader without the help of the Jedi, therefore on his own.
As further highlighted by Vader and Kylo's redemption stories, it was a lesson that Kylo Ren never fully learned himself, which makes Darth Vader the more powerful user of the Force between the two of them in Star Wars.
Given the years between these comics' publications, it's hard to tell if Gillen built this argument intentionally or not. Regardless, the core concept is still true. Thanos wields more power and authority than Darth Vader, existing as a stronger and more capable villain overall.
