Ezra's reaction would also depend on his state of mind at the time. If he was feeling confident and strong in the Force, he might be more bold in his approach to Vader. He could try to engage in a battle of wills through the Force, trying to push back against Vader's dark side influence. But if he was already weakened or doubting himself, the sight of Vader could make him feel hopeless and desperate, leading to a more erratic or panicked reaction.
His presence could change the power balance. If he sides with the Jedi, the Sith would be at a disadvantage. The Sith rely on secrecy and manipulation, but with Darth Vader knowing their plans, they would be exposed more easily.
His presence would likely change the power balance. The Sith already had a plan during the Clone Wars, but Vader's knowledge of future events could disrupt that. He might side with the Jedi against the Sith's plans, which would be a huge shift.
It could change the power balance. If he teams up with the Jedi, the Sith would be at a great disadvantage. The Sith rely on secrecy and manipulation, but with Vader on the Jedi's side, they'd have a tough time.
Darth Vader could encounter advanced droids that have developed personalities and even some form of Force - like abilities in this future. These droids might be a new challenge for him as they are not like the droids he is used to dealing with in his own time. He may also meet future versions of his former allies or enemies, who have been reincarnated or cloned in some strange new way, with different personalities but still with a connection to their past selves.
In the 'naruto is like darth vader fanfiction', their journey of self - discovery could be seen as similar. Naruto has to constantly figure out his place in the ninja world and how to control his power. Darth Vader is on a journey of self - discovery too, as he grapples with his identity as Anakin Skywalker and his role as Darth Vader. They also have a sense of isolation in some ways. Naruto often feels alone in his struggles, and Darth Vader is isolated in his dark armor, cut off from his former self and many human connections.
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.
Padmé could be a main character. Since Darth Vader is without his suit, it could be a scenario where he's reliving memories of her, and she could appear as a Force ghost or in his dreams, guiding him in some way. Another character could be Obi - Wan Kenobi. Their relationship was complex, and without the suit, Vader might be more vulnerable, and Obi - Wan could try to sway him back to the light side.
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.