Anakin might betray Palpatine to save someone he loves. If Palpatine threatened Padmé in some way, Anakin would surely turn against him. After all, Anakin's love for Padmé is one of his strongest driving forces.
It could also be that Anakin has a change of heart due to his Jedi training finally taking over. He realizes that the dark side is not the way and that Palpatine represents everything wrong with the Sith. So, he decides to betray Palpatine to set things right in the galaxy.
The storyline would take a huge turn. Instead of the Empire rising as it did in the original, there could be a new era of peace. The Jedi Order might be restored more quickly, and Anakin could become a hero instead of Darth Vader.
One possible plot could be that Anakin discovers Palpatine's plan to destroy the remaining Jedi earlier than in the original story. This early discovery gives him the chance to turn against Palpatine and kill him to save the Jedi order. Maybe he finds some hidden evidence that convinces him once and for all of Palpatine's true intentions.
The plot might involve Anakin being influenced by the good side of the Force more strongly. He starts having visions of a dark future if Palpatine continues to rule. Anakin then starts to secretly gather allies, including some Jedi who have survived Order 66. Together, they plan an attack on Palpatine. Anakin, with his enhanced power, confronts Palpatine directly. Their battle could be not just physical but also a battle of wills, with Anakin finally emerging victorious as he overcomes the dark side's allure within himself.
It could have completely changed the course of the Star Wars universe. With Palpatine out of the picture, the Sith might have crumbled and the Jedi could have regained their influence.
It could be for the greater good as she perceives it. Annabeth might think that by betraying Percy, she can save more people or prevent a greater disaster. However, her perception might be wrong, and she realizes it too late after the betrayal has already occurred.
Another important aspect is the emotional turmoil of Anakin. A great fanfic will show his struggle between the light and the dark side. He loves Padmé and his friends in the Jedi Order, but at the same time, he is drawn to Palpatine's offers of greater power to protect them. It's like a constant battle within him, and a good fanfic will explore this in depth. In some fanfics, Anakin's dreams about Padmé's death are a central part of his emotional turmoil and his journey towards the dark side.
It would likely have led to a very different outcome for the Star Wars universe. Maybe peace would have been restored earlier.
In some fanfics, there might be a plotline where Palpatine tries to corrupt Anakin even further during the battle, using psychological warfare. Anakin, on the other hand, has to resist this while also fighting for his life. This adds a layer of psychological drama to the physical fight between them.
Yes, there are some great Anakin kills Palpatine fanfics. You can try searching on fanfic platforms like Archive of Our Own. Some fanfics might explore different motives for Anakin to kill Palpatine, like a sudden realization of Palpatine's true evil nature before it's too late in the timeline. Others could be set in alternate universes where Anakin has a different backstory or set of circumstances that lead him to take this action.
In a fanfiction where Naruto is hired by Palpatine, one possible scenario is that Naruto's sense of justice clashes directly with Palpatine's tyranny. Naruto, being used to a world where there are clear good and bad guys, would quickly realize that Palpatine is on the wrong side. He might try to persuade Palpatine to change his ways, using his own experiences of redemption and growth. However, Palpatine is a very stubborn and power - hungry character. So, it would likely result in a battle of wills. And depending on how the fanfiction is written, Naruto could either succeed in changing Palpatine or have to fight against him to protect the innocent in the Star Wars universe.