With the other students, Harry in Lockhart's body would be seen in a whole new light. Some students who admired Lockhart might be drawn to him, while others who saw through Lockhart's facade might be even more distrustful. Harry would have to navigate these new social dynamics. His relationship with the teachers would also be strange. They might expect Lockhart - like behavior from him, and Harry would have to balance between acting like Lockhart enough to not arouse suspicion and still being able to pursue his own goals.
If Harry gets put in Lockhart's body in a fanfic, he would face a lot of challenges. His personality is so different from Lockhart's. Harry is more modest and sincere, while Lockhart is all about self - promotion. Harry would have to adapt to Lockhart's mannerisms and speech patterns. He could use this opportunity to learn more about Lockhart's past and why he is the way he is. Maybe he could even find a way to redeem Lockhart in the eyes of the Hogwarts community by doing some good deeds while in his body.
One plot idea could be that a spell gone wrong during a Defence Against the Dark Arts class causes the body - swap. Harry then has to teach the class while in Lockhart's body. He tries to use his own real - life experiences with dark magic to teach the students, but has to do it in a way that seems like Lockhart's flamboyant style. Another idea is that while in Lockhart's body, Harry discovers a secret diary in Lockhart's office that leads him on a new adventure to solve a mystery at Hogwarts that Lockhart was somehow involved in.
His relationship with Sasuke would be deeply affected. Without being able to verbally challenge Sasuke or express his feelings directly, Naruto would have to rely on his actions even more. Sasuke might initially misinterpret Naruto's silence as weakness or indifference.
His relationship with his friends might change. His friends could be initially worried about the nanites in Naruto. For example, Sakura might try to find a way to remove them, thinking they are harmful. But Naruto would have to convince her that they are a part of him now.
With his friends in Konoha, they might initially be shocked by his new appearance. But then, they would get used to it. Naruto's popularity among the villagers could skyrocket. People who once shunned him might now be more accepting. This could also change his relationship with Iruka sensei. Iruka would be proud of how Naruto has grown not just in terms of power but also in his appearance, and their bond could become even stronger as Naruto becomes a more respected figure in the village.
He might become more confident, bordering on overconfident at times. With superpowers, he would have a greater sense of invincibility, which could make him a bit more reckless in his actions compared to his non - superpowered self.
Naruto's chakra could be affected in different ways. Maybe his chakra would take on some properties of the Xenomorphs' acidic blood. So, when he uses certain jutsu, it could have an acidic effect as well. Also, his ability to sense danger could be enhanced. The Xenomorphs have a natural sense of stealth, and Naruto could inherit this, making it even harder for enemies to surprise him. He could also use his shadow clones in more creative ways, like using them as decoys to draw out the Xenomorphs' attacks and then counterattack.
If Percy Jackson gets a trident in fanfiction, his relationships would shift significantly. His friends like Annabeth would see him as an even greater asset in their quests. However, some might also be worried that the power of the trident could go to his head. His enemies, especially those from the sea - related villains, would be more cautious around him. And he might attract new allies who want to be on the side of someone with such a powerful weapon.
Well, Percy's relationships would be in upheaval. In the case of his friends, the dynamics would shift. His male friends might have to reevaluate how they interact with him. For example, they might be more cautious about physical contact or their language. His female friends could either embrace her new form and become closer, seeing her as one of them now, or they could be jealous if Percy in his new female form gets more attention. And in terms of romantic relationships, if Percy was interested in girls before, he might now find himself attracted to boys, which would completely change the nature of his love life.
His relationships change drastically. For example, Hermione might be initially very suspicious of him being in Slytherin. Ron might be more openly hostile at first. But as the story progresses, Harry could prove that just because he's in Slytherin doesn't mean he's a bad person. His relationship with Snape could also be different. Snape might still dislike him, but for different reasons related to Slytherin house politics.