Well, one idea for this crossover could be that Savitar somehow ends up in the world of Percy Jackson. Maybe he's chasing after some new kind of speed - the speed of a demigod? And Percy has to figure out how to deal with this strange, super - fast being who doesn't seem to follow the normal rules of the Greek myth world.
Superman could also be a great addition. His super strength and invulnerability combined with Savitar's speed would make for an interesting dynamic. They could face a powerful enemy that requires both of their unique abilities to defeat, like a being that can absorb energy and use it against them.
One idea could be a crossover with another superhero universe, like having Savitar team up with the X - Men. He could use his speed to help them in a battle against a common enemy. Maybe they are facing a villain who can manipulate time as well, and Savitar's experience with his own time - related powers would be crucial.
There could be. Fanfiction writers are known for their creativity and willingness to blend different fictional worlds. Naruto has a huge fan base, and so does the Flash (where Savitar is from). Some fans might be intrigued by the idea of Naruto being related to Savitar in some way, perhaps through a time - travel or dimension - hopping scenario in the fanfiction. It's definitely worth exploring some of the major fanfiction platforms to find out.
It could be the Time Wraiths. Since Barry is taking on the identity of Savitar, who was a time - aberration, the Time Wraiths might come after him. They would view him as a threat to the proper flow of time and try to eliminate him, making them the main antagonists in this fanfiction scenario.
One possible scenario could be that Naruto is transported to the Flash's universe and somehow gains the powers of Savitar. He might use Savitar's speed in his own unique way, like combining it with his shadow clones to create a sort of blitzkrieg attack. Maybe he would also struggle with the darker aspects of Savitar's power, as Naruto is typically a more positive - minded character.
Barry Allen x Savitar fanfiction often plays with the idea of alternate universes. Writers may create scenarios where they are not enemies but rather allies or even something more. This can lead to interesting character developments. For example, Savitar's time - related powers combined with Barry's speed could be used in unique ways to solve problems or face new threats that were not present in the canon storyline.
In this fanfiction concept, imagine Savitar being from a different dimension and accidentally stumbling into the Percy Jackson universe. He doesn't understand the rules at first. The demigods are initially scared of him because of his speed and strange powers. But Annabeth, being the smart one, figures out a way to communicate with him. Through their interactions, Savitar starts to question his own motives and actions, leading to a character arc where he may even end up helping the demigods against a greater threat.
Yes, there are quite a few interesting Savitar Dark Hunter fanfictions out there. You can start by looking on popular fanfiction websites like Archive of Our Own or FanFiction.net. Some fanfictions might focus on Savitar's backstory, his relationships with other characters in the Dark Hunter universe, or new adventures he could embark on.