Enemies could be many. In the past, he might face Sith Lords who don't want him to change the timeline and disrupt their plans. In the future, he could encounter new galactic powers or beings with strange powers that oppose his presence. For example, a future race that has developed technology to counter the Force.
One interesting plot could be Darth Vader traveling back in time to prevent his own fall to the dark side. He might try to change the events that led him to become a Sith, like saving Padmé.
He might be shocked by the advanced technology. The Empire's weaponry would seem primitive compared to future tech. He could also be intrigued by the new forms of the Force if they had evolved.
Darth Vader could meet advanced droids that have personalities and abilities far beyond what he's used to. These droids might see him as a relic from a bygone era. He could also meet future scientists who are intrigued by his cybernetic enhancements and try to study him. Additionally, there's a chance he meets descendants of his former allies or enemies, which would create a complex web of relationships and interactions.
One interesting plot could be Darth Vader traveling back in time to prevent his own fall to the dark side. He might try to change the events that led him to become Vader, like saving Padmé. Another could be Vader traveling to the future and seeing the downfall of the Sith, which makes him question his loyalty to the dark side. He could then try to find a way to change the future of the Sith order.
Darth Vader would likely be conflicted. On one hand, he could see the potential in his younger self to become a powerful Sith. On the other hand, he might be reminded of his own lost innocence. He might give his younger self some warnings about the path he is about to take, but also encourage the dark journey.
Their relationship could become more understanding. As they travel through time and see different events together, Luke would gain a deeper understanding of what led his father to become Darth Vader. Vader, in turn, might see Luke's unwavering hope and goodness more clearly, which could soften his stance.
There could be. Fanfiction often features unique and unexpected crossovers. Given the popularity of both Naruto and Star Wars, it's not surprising that someone might write a story where Naruto is a fan of Darth Vader. This could lead to some really interesting plotlines, like Naruto being inspired by Darth Vader's power or his complex character and trying to incorporate some of those aspects into his own ninja world.
Yes, there might be. Fanfic websites like FanFiction.net or Archive of Our Own could potentially have such a fanfic. You can search for it using the relevant tags and keywords on these platforms.
Yes, there are likely some fanfics with this concept. Fanfic writers often explore unique and alternative storylines. They might be interested in exploring what would happen if Ahsoka, who was Anakin Skywalker's apprentice, ended up in a situation where she worked for Darth Vader (Anakin's Sith persona). It could involve complex character dynamics and a re - imagining of the Star Wars universe.