They could fit in as a new and powerful force. Maybe they are hidden in the shadows, secretly influencing events. For example, they could be behind some of the dark magic incidents that happen in the fanfiction.
These dark godlike vampires might fit in by creating their own faction. They could be opposed to both the Death Eaters and the Order of the Phoenix, with their own goals and motives. They could bring a new kind of chaos to the story, as they are not bound by the same rules as wizards.
He could fit in as a new kind of hero. His magic would be something unique compared to the existing powers in the Marvel world. He might join the Avengers and use his spells during battles. For example, he could stun enemies with a simple 'Stupefy' spell or create a large magical explosion with a more powerful incantation.
A Godlike Harry Potter might be integrated as a powerful ally against a common enemy. For example, if there's a new and extremely powerful type of Grimm or a dark force emerging in the RWBY world, his unique abilities could turn the tide of battle. He could also have his own arc within the RWBY fanfiction, perhaps learning about the unique Dust - based magic in RWBY while sharing his own wizarding knowledge.
Well, a dark godlike vampire in Harry Potter fanfiction could be really interesting. Maybe it's a character who was once a normal wizard but got turned into a vampire and then somehow gained godlike powers. This could lead to some really unique story arcs, like how the other characters in the Harry Potter universe would react to this new threat or ally. They might be feared or revered, depending on their actions.
One way is by having a magical artifact in the Harry Potter world that contains the essence of the Dark Phoenix. When it's discovered, it starts to corrupt those around it. For instance, a dark wizard could try to use it to gain ultimate power, much like how the Dark Phoenix was a source of great power in its original context.
They can fit in various ways. For example, they could be part of a new threat that the Hogwarts students have to face. The Dothraki's combat skills and fearless nature would make them formidable opponents.
Some fanfictions make Arrancar into students at Hogwarts. This is really interesting as they have to adapt to the rules and the way of life at Hogwarts. They might have trouble with things like the House system or following the instructions of the professors, given their different upbringing in the Arrancar world. Their combat - based powers can also make them stand out in classes like Defense Against the Dark Arts.
In fanfiction, changelings can fit into the Harry Potter universe in various ways. They could be part of the magical creatures' lore. For example, they might be related to the concept of shape - shifting, like Animagi but with a different origin. Maybe they are a result of some ancient magic gone wrong or right.
In dark fanfiction, a 'godlike Harry Potter' might have extreme powers that are often amplified beyond the original series. For example, he could have the ability to manipulate time and space in very dangerous and unethical ways, like changing historical events for his own gain without considering the consequences for the wizarding world at large.
The concept can also lead to a more complex exploration of the wizarding world's politics. A godlike Harry Potter may decide to take over the Ministry of Magic or change the way the wizarding society is governed. This would involve dealing with different factions, some who support his new regime and others who oppose it, creating a lot of political intrigue and conflict within the dark fanfiction plot.
Canon Harry Potter is often seen as a hero who follows the rules and values of the wizarding world. However, in dark godlike fanfiction, he may break the rules more freely. He could have powers that are not part of the normal magical repertoire in the books. His relationships with other characters can also change drastically. For instance, his friendship with Ron and Hermione might be strained as his new powers and 'dark' nature set him apart. He may also view the Ministry of Magic in a different light, perhaps as an obstacle to his new - found power and goals.