In a fanfiction where Harry Potter becomes an assassin, the entire plot of the original series would be turned on its head. The prophecy about him and Voldemort would take on a new meaning. Instead of just being the 'Chosen One' to defeat Voldemort, he could be seen as a weapon to take out Voldemort in a more underhanded way. This could lead to a different power struggle within the Death Eaters and the Order of the Phoenix. Some might see Harry as a hero for taking a more direct and deadly approach, while others would condemn him for straying from the values of the wizarding world.
Yes, there are likely to be such fanfictions. The 'Harry Potter' universe has a vast and creative fanfiction community. Some fans might come up with the idea of Harry Potter being a Muggle assassin as a way to explore different storylines and character developments outside of the original canon. It could involve Harry using his magical skills in a Muggle - centered, assassin - like role, perhaps to protect Muggles from dark magic threats in a more covert way.
Perhaps an international wizard who has been trained in both magic and martial arts in some far - flung magical school. This wizard - assassin has his own code of ethics and when he meets Harry, he decides to take him under his wing, believing that Harry can be a force for good in a different way than the traditional Hogwarts - trained wizards.
It could be a rogue Death Eater who has mastered a new form of invisibility spell. This Death Eater might be seeking revenge on those who opposed Voldemort.
No. Harry Potter is mainly known for its own magical world and themes of friendship, good vs. evil, etc. Turning Harry Potter into an assassin fanfiction goes against the original spirit of the series and is likely not popular among the mainstream Harry Potter fans.
One idea could be that Harry discovers a hidden centaur community in the Forbidden Forest. He's initially scared but soon realizes they have a deep connection to magic that Hogwarts has not taught. He starts learning from them, about their archery skills and how they communicate with nature.
If Harry Potter becomes a Sith in fanfiction, it would be a wild departure from his original character. He'd likely trade his Gryffindor values for the dark and power - hungry ways of the Sith. His magic could take on a more menacing form, and his relationships would be severely strained. For example, his friendship with Ron and Hermione might turn into enmity as he delved deeper into the dark side.
Well, if Harry Potter becomes a genie in fanfiction, he could use his magic in very different ways. He might be able to grant wishes, which would be a huge change from his usual spell - casting. For example, he could grant the wishes of his friends like Hermione and Ron. Maybe Hermione would wish for all the knowledge in the world to be easily accessible, and Harry as a genie could make it so.
It could be a former Auror who has turned to more shadowy ways of dealing with threats. After seeing the inefficiency of the Ministry's methods in some cases, they decide to take matters into their own hands and become a sort of assassin to target dark wizards.
Perhaps in a fanfiction, Voldemort has made an alliance with a powerful villain from the Avengers' world and an ancient order of Assassins gone bad. Harry Potter, along with some of his Hogwarts friends, has to convince the Avengers to help them. They would then combine their different abilities. For example, Hermione could use her vast knowledge to figure out the weaknesses of their enemies, while Captain America could lead the group in battle strategy, and the Assassin could provide crucial intel on the secret workings of the enemy alliance.