Well, it could be about Harry being transported to Kamino by some strange magic or technology. Maybe he has to adapt to the Kaminoan culture and deal with their cloning technology. He might even get involved in their military affairs.
Harry is the central character for sure. Alongside him, there might be some Kaminoan scientists or military leaders. For example, a Kaminoan scientist who is intrigued by Harry's magic and wants to study it. Or a military leader who sees Harry as a potential asset in their defense against some new threat.
One possibility could be that Harry Potter grows up with a strict military - like discipline on Kamino. He might be trained in unique combat skills that are different from what he learned at Hogwarts. He could also form unexpected alliances with the Kaminoans, and use their advanced cloning technology to his advantage in the wizarding world battles.
A great plot for Star Wars Kamino fanfiction could involve a lost Jedi Padawan who ends up on Kamino. The Padawan discovers that the Kaminoans are experimenting with a new type of clone that has Force - sensitive abilities. This discovery puts the Padawan in a difficult position as they have to decide whether to report it to the Jedi Council or try to stop the experiments on their own. Another idea is to write about a clone who starts to have memories of a previous life and realizes that he was cloned from a person with a very different moral code. He then tries to break free from the programming of the Kaminoans and find his own identity. Also, a story about a smuggler who lands on Kamino and gets caught up in the politics between the Kaminoans and the Galactic Republic could be really interesting.
The clone troopers are obvious main characters. They have a lot of potential for character development. Then there are the Kaminoans, who are in charge of the cloning process. A fanfiction could also feature a young, newly - created clone who is different from the others and tries to find his place in the galaxy. Additionally, a Sith Lord could be a main character if the story is about infiltrating Kamino for some dark purpose.
His character would become more self - reliant. On Kamino, he may not have the same support system as in Hogwarts. So he'd learn to fend for himself faster. He'd also be more adaptable to new and strange situations as Kamino has a very unique environment.
One possible plot could be that Harry discovers he is a Kryptonian. He then has to balance his life at Hogwarts with his new - found powers. Maybe he starts to show superhuman abilities during Quidditch matches, like flying faster than his broom should allow.
One possible plot could be that Harry discovers a magical portal that leads him to the world where Whitebeard exists. He then tries to join Whitebeard's crew, proving his worth through his magical abilities. The crew is initially skeptical but gradually accepts him as he helps them in battles against other pirates using his spells.
Maybe Harry discovers he has shinobi abilities in addition to his magic. He could use these new skills to fight against the dark forces in the wizarding world in a different way. For example, using stealth and ninjutsu techniques to gather information on Voldemort.
The plot could involve a situation where a new form of dark magic is unleashed in the wizarding world, which spreads like wildfire and causes destruction similar to 911. The Ministry of Magic is caught off - guard. Hermione, with her vast knowledge, starts researching a way to counter this magic. Meanwhile, Ron and Harry lead the effort to protect the civilians. They set up shelters in places like the Room of Requirement and use Patronuses to guide people to safety. As they dig deeper, they discover that this dark magic was a planned attack by a long - hidden dark wizard group who wants to take over the wizarding world.
Perhaps Harry is Minato in a world where both the magic of Harry Potter and the chakra of Naruto exist. Harry, as Minato, could be on a quest to find a way to combine the two powers for the greater good. He might face challenges from both the wizarding world and the ninja world, as they both fear the power he could gain from merging the two. Along the way, he could make friends and allies from both worlds, and also encounter enemies who want to stop him from achieving his goal.