Hermione Granger would also make a great main character. She might be interested in researching the unique magical aspects of Goa Uld. Her thirst for knowledge would drive her to explore the place, and she could encounter all sorts of magical phenomena there that she would try to understand and document.
Obviously, Harry Potter himself could be a main character. He could be drawn to Goa Uld because of some mysterious happenings that seem to be related to Voldemort or some other dark force.
Obviously, Harry Potter would be one of the main characters. Hermione and Ron would likely be by his side as well. But there could also be new characters specific to the Goa Uld Host. Maybe a local wizard named Arjun who has a deep connection to the Goa Uld Host and acts as a guide for Harry and his friends. Another could be an elder of the Uld, a wise and powerful figure named Zara who has knowledge about the history of the host and the magic involved.
One possible plot could be that in Goa, there is a hidden magical community. The Uld (assuming it's some sort of magical entity or group) could be hosting an event. Harry Potter and his friends arrive there and discover a new kind of magic that is unique to this place. They might have to face challenges related to local magic traditions and make new allies among the Goa wizards.
In this type of fanfiction, the interaction could be based on mutual interests. Maybe some Goa'uld are interested in the Philosopher's Stone for its potential to grant immortality. So they might try to make deals with the wizards. However, the wizards would be very cautious as they know the Goa'uld's reputation for being manipulative. This would lead to a lot of tense negotiations and possible betrayals.
A plot could involve a Goa'uld escaping from its own realm and finding its way into the wizarding world. It chooses a random Harry Potter character as a host. The Goa'uld starts to use the character's knowledge of magic and the wizarding world to its advantage, trying to build its own little empire within Hogwarts. However, the magical nature of the wizarding world has some unforeseen effects on the Goa'uld, and the character's original personality starts to fight back against the Goa'uld's control. This internal struggle and the external attempts to stop the Goa'uld make for an interesting fanfiction story.
One plotline could be that the goa'uld symbiants are discovered in the Forbidden Forest. Harry and his friends, out of curiosity, start to investigate. As they learn more about the symbiants, they find out that there is a prophecy that links the fate of the wizarding world with the goa'uld. Harry then has to figure out how to prevent a catastrophe that would occur if the wrong goa'uld gets too much power in the wizarding world. This could involve traveling to different magical and goa'uld - related places, making new allies and enemies, and using both his magical skills and the new knowledge about the symbiants to save the day.
A powerful dark wizard from Goa Uld's world could be the main antagonist. He could be jealous of the chakra power in Naruto's world and want to steal it for his own evil purposes. He might start by creating chaos in the shinobi villages to weaken them before making his big move.
Probably Anubis. He was extremely powerful among the Goa'uld. In a Harry Potter crossover, his ability to manipulate dark forces could be enhanced by the dark magic in the Harry Potter universe. He might be able to use spells like the Unforgivable Curses to his advantage and combine them with his Goa'uld powers.
In Goa'uld Harry Potter fanfiction, there could be a concept where the Goa'uld symbiotes possess magical creatures in the Harry Potter world. Imagine a Goa'uld in a hippogriff or a dragon. This would not only change the nature of those creatures but also create a whole new set of challenges for the characters in the story. The Goa'uld's hierarchical society might also clash with the relatively egalitarian society of the wizards, leading to all sorts of power struggles and political intrigue.
One idea could be a story where Goa Uld is a new magical creature discovered in the Forbidden Forest at Hogwarts. The main characters, like Harry, Hermione, and Ron, have to figure out how to deal with it. Maybe it has some unique powers that can either help or endanger the wizarding world.
There are some interesting fanfictions out there that combine Goa'uld Queen and Harry Potter elements. One can start by looking on major fanfiction platforms like FanFiction.net or Archive of Our Own. You might find stories where the Goa'uld Queen's power dynamics are introduced into the wizarding world of Harry Potter, creating unique plot twists and character interactions.