Their relationship could start off as adversarial. Darth Vader sees R2D2 as just another piece of Rebel technology to be destroyed. But as the story progresses, he might start to respect R2D2's tenacity and the fact that it has survived so many battles. For example, if R2D2 helps Vader in some small way, like leading him out of a dangerous situation, Vader might start to view the droid differently.
Perhaps R2D2 and Darth Vader are both stranded on a desolate planet. At first, Vader tries to use the Force to control R2D2, but the droid resists. As time passes, they both realize they need each other to survive. R2D2 helps repair Vader's damaged suit, and in return, Vader protects R2D2 from the planet's dangerous creatures. This shared experience could gradually transform their relationship from one of enmity to a grudging respect.
In many fanfictions, their relationship develops in a complex way. At first, it's mainly about the enmity. But as the story progresses, there could be moments of understanding. For example, Vader might see some of his old self in Ahsoka. Ahsoka, on the other hand, might start to pity the broken man that Anakin has become. This could lead to a strange sort of respect between them, even though they are on opposite sides.
In some fanfiction, their relationship might develop due to shared goals. Let's say they both want to stop a new superweapon being developed by the Empire. Working together towards this common objective forces them to interact more, and they begin to see each other in a new light. Vader might show moments of vulnerability, which Leia starts to pick up on, and she realizes there is more to him than just the menacing Sith Lord. This mutual discovery helps in building a more nuanced relationship between them.
One great 'Star Wars Darth Vader Fanfic' is 'Vader's Redemption'. It shows a different side of Vader, exploring his inner conflict in a very engaging way.
I really like the fanfic 'Darth Vader: The Hidden Years'. This one delves into the time period between Episode III and IV, when Vader was still adjusting to his new life as a Sith. It gives a lot of backstory and character development that you don't get in the movies. It shows how he's dealing with his new powers and his relationship with the Emperor.
No, Darth Vader doesn't appear in Solo: A Star Wars Story.
Darth Vader was once Anakin Skywalker, a Jedi with great potential. But he was lured to the dark side by Palpatine. He became a Sith Lord. Vader was a fearsome figure in a black suit with a red lightsaber. He carried out the Emperor's evil commands, like hunting down Jedi. However, in the end, he redeemed himself by saving his son, Luke Skywalker, from the Emperor's wrath at the cost of his own life.
Darth Vader was once Anakin Skywalker, a Jedi with great potential. He was lured to the dark side by Palpatine. His fall was tragic. He became a Sith Lord, a powerful enforcer for the Empire. He wore the iconic black suit and had a menacing presence. He was involved in many battles, like the destruction of Alderaan. In the end, he redeemed himself by saving his son, Luke Skywalker.
In fanfiction, their relationship could develop more quickly towards mutual understanding. Maybe Luke could convince Vader to turn away from the dark side much earlier, and they could start training together as Jedi. This would be a huge shift from the original story.
A great 'Star Wars Darth Vader Fanfic' has to have a deep understanding of the character. Darth Vader is complex, so it should show his conflict between the light and dark side. For example, fanfics that explore his memories of Padmé are often good.
A good 'Star Wars Darth Vader Fanfic' should have a deep understanding of the character. For example, it should explore Vader's duality - his past as Anakin and his current state as Vader. Also, it should fit well within the Star Wars universe in terms of the lore and the technology.