The Sith Lord responsible for Anakin's fall Palpatine led Anakin Skywalker to the dark side and gave him the name of Darth Vader. The Emperor always knew the truth, and seems to have been the one who decided it should remain a closely guarded secret.
Very few people knew that Darth Vader and Anakin Skywalker were the same person up to his death in 5 ABY. Imperials who knew in the current canon: Sidious (emperor), Grand Moff Tarkin, all or most of the Inquisitors, Grand Admiral Thrawn, various clones in the early empire.
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.
R2-D2 was present when Padmé gave birth to Leia and Luke, so he knew Luke was Anakin's son – but what he didn't know was that Anakin became Darth Vader. In addition to that, Anakin's fall was surely a painful event in R2-D2's life, one that he definitely wouldn't like to remember or even talk about.
Some time after this quest Cal was rifted into the Multiverse Merged universe where he met Luke Skywalker and formed a New Jedi Order with him. Although recent hardships have strained their relationship, Cal and Luke are still trying to restore the Order, now much better than it was before.
3 Deleted Scenes LITERALLY CHANGE how Anakin Became Vader
Why does Darth Vader not remember C-3PO?
Darth Vader acts like he doesn't even know C-3PO or R2D2. They were with him since he was a child. He did everything he could to forget his past. Also, his plating had been replaced many times, and protocol droids all look very similar.
Maybe R2-D2 didn't know Darth Vader was Luke's father because he didn't see Palpatine christening him Vader, or maybe he believed Anakin was dead because even Obi-Wan didn't know Anakin was alive.
As has been noted in several instances, Artoo has never had a full memory wipe, enabling him to retain his recollections of everything he saw and heard over the decades. This includes his first meeting with Padme Amidala, a nine-year-old Anakin Skywalker, and C-3PO himself during the events of The Phantom Menace.
Sidious always said that Anakin—well Vader—would become more powerful than him and anyone in the galaxy. He said this to Yoda prior to their duel and he continued to say it.
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.
And while his warnings don't work, at the very least, it shows that Maul became aware of Anakin and what he would soon become. With the rise of the Empire, it's likely Maul caught on to Vader's existence pretty quickly.
Return of the Jedi establishes that Yoda was aware that Anakin Skywalker had fallen to the dark side and become Darth Vader. When questioned by Luke Skywalker, he confided that Anakin was Darth Vader. Later, Obi-Wan Kenobi's Force ghost confirmed that Anakin had indeed fallen to the dark side and become Darth Vader.
At what point does Darth Vader realize Luke is his son?
Summary. Darth Vader learns Luke Skywalker is his son shortly after A New Hope in canon and Legends comics. In canon, the reveal occurs in Marvel's Star Wars #6, where Vader vows to make Luke join him. In Legends, Vader's discovery is shown in Marvel's Star Wars #35, later expanded in Star Wars: Vader's Quest.
The base assumption of why Obi-Wan doesn't remember R2-D2 -- in light of the prequels -- is that Obi-Wan is feigning ignorance in A New Hope to downplay the importance of the droid's arrival. That explanation holds the most water for a number of reasons.
She senses Anakin when she reaches out to the pilot — and Vader realizes that Ahsoka, his former Padawan, lives on. In Season 2, Episode 18, “Shroud of Darkness,” Ahsoka's guilt manifests as a vision of Anakin, who's angry with her for leaving him all those years ago.
His backstory is explored in a flashback that occurs later in the game, which reveals that Cal was a Jedi Padawan training under Jedi Master Jaro Tapal during the Clone Wars, and that when Order 66 was issued, Tapal sacrificed himself to save Cal from their former clone troopers, leaving the latter guilt-ridden and ...
