Warning: Contains SPOILERS for Star Wars: Darth Vader #50! Star Wars fans are well aware of the fact that Darth Vader redeemed himself in Return of the Jedi, reclaiming his lost identity as the Jedi Anakin Skywalker. However, what they may not know is that Vader allowed the mutilated piece of his corrupted spirit that was Anakin Skywalker to shine through before the events of Episode VI, influencing a key Darth Vader decision – the one that led to his ultimate redemption.
https://screenrant.com/darth-vader-redemption-before-return-of-the-jed/