Master Yoda knew that Darth Vader was once Anakin Skywalker- the boy he sensed too much fear in to train way back in Star Wars: The Phantom Menace.
Yoda didn't specifically know how this would go down, or to what degree Anakin would cause it to happen, but he was playing a much longer game by Revenge of the Sith, and that's at least, in part, explained by Yoda's Force connection with Qui-Gon's spirit.
As revealed in the final pages of Darth Vader #22, one person who knew Vader's true identity was none other than Sabé, the one-time handmaiden, bodyguard and decoy of Padmé Amidala, Anakin's deceased wife.
The Jedi from the Star Wars prequels, including Master Yoda, did not understand Anakin Skywalker's Chosen One prophecy for these essential reasons. The Jedi of the Star Wars prequel era clearly did not understand the famous Chosen One prophecy.
Yoda had always been great at sensing people's feelings, even in Star Wars: The Phantom Menace, where he was able to sense young Anakin's worries about his mother. The first hint of Yoda realizing the truth was during Star Wars: Attack of the Clones during the Battle of Geonosis.
He was still completely unaware of the Sidious/ Palpatine connection until ROTS. He also said during TCW season 6 that the Jedi order must believe in the clones and end the war before the Sith's plans are realized.
This is confirmed later in the movie when Obi-Wan informs Padme that Anakin killed them. Both are torn apart with hurt and confusion, trying to make sense of something so terrible.
As the Clone War dragged on, Yoda became increasingly wary of Anakin, sensing great turmoil within him, after experiencing visions of his secret wife dying in child birth, Anakin turned to Yoda for advice (albeit without telling him about Padme) but Yoda, unaware of the intensity of Anakin's love for Padme, said "train ...
Several Jedi believed Anakin Skywalker would bring balance to the Force, but Count Dooku may have seen himself as the Chosen One instead. Anakin Skywalker was prophesized to bring the balance to the Force, but one Star Wars theory suggests that Count Dooku believed he was the true Chosen One, not Anakin.
Obi-Wan Kenobi, during his confrontation with Vader on Mustafar, stated that he believed Anakin was indeed the Chosen One, but that his destiny had been altered, and the prophecy left unfulfilled. Anakin fulfills the prophecy by killing Palpatine. Skywalker's sacrifice brings balance and redemption.
He regretted it the moment he did it. He asked himself what he just did, dropped his lightsaber, and was visibly ashamed of himself when Palpatine anointed him a Sith Lord and began his speech about wiping out the Jedi.
Luke, Han, and Leia
She had encountered the Dark Lord of the Sith a handful of times during her political career, but her abiding memory of Vader was as her torturer on the Death Star. It wasn't until Bloodline that she began to truly understand Anakin Skywalker, in a situation where she too felt tempted.
Despite seeing Vader as an idol, Kylo conveniently ignored his grandfather's redemption. He was well aware of what happened, and it's likely Luke himself who told Ben about the events of Star Wars: Return of the Jedi.
If Anakin went to Utapau with Obi-Wan, they would both defeat Grievous, Anakin wouldn't turn to the dark side, but Yoda and Mace would have to help him and Obi-Wan stop Palpatine. If Anakin avoids the dark side, he would still be with Padme and they would live together with Luke and Leia.
He did know. Yoda and Mace, know that Anakin and Padmé are closer than just “friendly acquaintances”. The extent of this relationship is likely unknown to them (like the fact that he and Padmé are full-on married) but they do know that something is there. Bottom line: they know he cares for her very much.
Reva knows that Anakin Skywalker is Darth Vader because she was one of his targets—a child—during the Order 66 killings that took place during the events of Star Wars Episode III: Revenge of the Sith.
Anakin ultimately fulfilled his role as the Chosen One and brought balance to the Force, fulfilling Qui-Gon Jinn's belief in the prophecy that foretold Anakin's destiny. Accepting his fate, Anakin joined his Jedi mentors in death by becoming one with the Force.
Prior to his defeat on Mustafar, Anakin Skywalker was the single most powerful Force user in the known galaxy. In a direct brute Force contest, Anakin Skywalker would sweep the floor with anyone. The ability to use the Force is a powerful edge against any foe, but it isn't everything.
throughout many of the Legends storylines, Vader sought to hunt down every last Jedi. while Palpatine was no longer concerned with the Jedi. Order, in his eyes, Yoda and the Jedi no longer posed a threat to his role. during the early years of the Empire, Palpatine only sent Vader to hunt survivors.
One of the main reasons why Yoda would've won against Anakin is simply because he was far better trained than him. Yoda could see the moves his opponents were going to make before they made them; therefore, battling against Anakin would've put him at a far heavier advantage.
Yoda held the title of Grand Master of the Jedi Order since the days of the High Republic Era. At some point, Yoda took on a human named Kantam Sy as his Padawan.
Anakin does not have even the slightest bit of remorse. By the end, he feels nothing but anger. Although he feels regret for killing Padme, he still helps the evil Emperor. The film ends with Anakins standing side by side with the man on whose behalf he has committed all his crimes.
The story is Anakin was manipulated to the dark side by Palpatine based on fears of losing Padme and appeals to his desire power and agency, over his life and the galaxy as a whole.
Yes he did. And the saddest thing is that there was nothing he could do about it. He was broken. The first case is shortly after ROTS when Vader was making his Sith lightsaber.