Vader remembers everything, but he seperates the persona of Anakin from that of Darth Vader. There are a couple of reasons for this. First of all, is dissociation . Dissociation is a break in how your mind handles information.
Darth Vader DEFINITELY knows he's Anakin.. but it's something he HATES about himself. He's constantly haunted by Anakin's memories, but he does his best to “kill" that part of him. He WANTS them to be different people, in his mind he killed Anakin and rose as something stronger. However he's always aware of his past.
Anakin absolutely did regret many of his bad choices. After becoming Darth Vader, he pushed the regret down for awhile by dissociating himself from Anakin before the suit.
Darth Vader's true identity as Anakin Skywalker was a highly guarded secret, known only to a select few individuals including Palpatine, Obi-Wan Kenobi, Luke, Han, Leia, R2-D2, C-3PO, Master Yoda, Bail Organa, Ahsoka Tano, Darth Maul, Grand Moff Tarkin, Grand Admiral Thrawn, Jocasta Nu, Ferren Barr, Verla, Reva, ...
However, the animated series and comics are now revealing that the Sith Lord showed what Padmé meant to him even after his transformation. Considering his position as a servant of Emperor Palpatine, it can be assumed that Vader eventually moved past his feelings.
Yoda. Yoda's knowledge of Luke Skywalker's true parentage was also confirmed in Return of the Jedi. As with Obi-Wan, Yoda believed that Anakin's fall to the dark side made him unsalvageable, with the Darth Vader persona being his only identity following his ascension to Sith Lordship.
Even though Luke tried his best to protect him, Anakin accepted his fate and expressed his love for his son and daughter, Leia, whom he learned about before dying. While it seemed like Anakin had lived a long life, his choices eventually led to his demise at 45.
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.
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 added risk Darth Vader takes in allowing children to live in a situation where he could have killed them proves that he regrets killing Younglings and will avoid harming any more children for the rest of his days, though intense intimidation is a dark strategy to avoid repeating his Youngling massacre.
The canonical comic Star Wars: Darth Vader #7 confirms the younglings' deaths caused Anakin grief, self-loathing, hatred, and pain, fueling his descent even further into the Dark Side.
Luke became famous after destroying the Death Star, putting him right in the crosshairs of the Empire. As The Empire Strikes Back picks up, Vader is obsessively searching for Luke, due to their familial connection.
In the end, Anakin was dismembered and left with terrible burns, cursing his old friend and becoming a being of pure hate. Recovered on the banks of a lava river by the Emperor, Anakin was encased in sinister black armor that kept him alive, and he truly became Darth Vader.
During the battle, Anakin, who had been known as the Sith Lord Darth Vader, was redeemed by Luke and brought balance to the Force. However, the redemption cost Anakin his life, having been mortally wounded by the Emperor, Darth Sidious, while killing his former Master.
How old was Anakin when Luke and Leia were born? In canon, he was 22 (he was born in 41 BBY, and Luke and Leia were born in 19 BBY). In Legends, accounts vary saying he's either 22 or 23. Interestingly enough, he was around two years younger than Ben Solo was in the TLJ flashback were Luke reads his mind.
Summary. Anakin Skywalker's birth mystery is solved - his mother, Shmi Skywalker, reveals that there was no father and she can't explain what happened. Qui-Gon Jinn believed that the Force itself created Anakin in Shmi's womb, making him the Chosen One who would bring balance to the Force.
When Anakin had to choose between losing Padme — fearing that she might die in childbirth — or turning to evil to “save” her from death, he chose evil. His desire to “save” her at all costs led Anakin to the dark side. For him, the dark side became a means of saving his loved one.
