They usually have a strong sense of justice. Since they are Peter Parker's child, they grow up seeing his heroics and want to follow in his footsteps. So they are likely to be very protective of the innocent and fight against evil. Also, they might inherit Peter's intelligence, which helps them in creating gadgets or coming up with strategies to fight villains.
One common theme is the discovery of powers. As a child, Peter is just starting to figure out what he can do, and this journey of discovery is often explored. Another theme is friendship. How his relationships with his peers, like Ned in later years, might have started when he was a child.
In many fanfictions, the child of Peter Parker can have various identities. It could be a character with new powers and a unique personality, often inheriting some of Peter's spider - related abilities. For example, in some stories, the child might be a girl who uses her powers to fight crime in a different way than Peter.
He could be more brooding. The demonic influence might make him more withdrawn as he grapples with the changes in himself. He may also be more aggressive in combat, using his powers with a newfound ruthlessness.
In a fanfiction about Peter Parker being kidnapped as a child, it might focus on how his family and friends reacted. Aunt May would be devastated. His friends like Ned might try to find him on their own, getting into all sorts of trouble in the process. It could also show Peter's early display of his spider - like abilities as he tries to escape from his captors.
Another theme is the struggle between normal life and superhero life. Peter has to deal with school, homework, and teenage problems while also being Spider - Man. Fanfictions often show how he manages to juggle these two very different aspects of his existence.
Some people react with disappointment. This could be if the fanfiction doesn't match their expectations of Peter Parker's character. For example, if it makes him too mean - spirited when he's usually a kind - hearted hero in the original works. On the other hand, many react with enthusiasm. They might be really into a particular ship (like Peter Parker and MJ in a romantic storyline) in the fanfiction and be eager to read more chapters about it.
A fanfiction could show Peter being kidnapped by a criminal mastermind who wants to use him as leverage against Spider - Man in the future. Peter, as a child, would have to find a way to escape and also figure out how to stop this person from ever coming after him again. It could involve him making new friends among other kidnapped kids who help him in his escape plan.
One possible plot could be that Peter Parker discovers his connection to the universe in a very profound way. Maybe he starts to have powers that are not just spider - related but are more cosmic in nature. For example, he could have the ability to communicate with celestial beings or understand the language of the stars. This new power might put him in a position where he has to protect not just New York but the entire universe from a threat that only he, as a 'child of the universe', can stop.
Mary Jane Watson is often a common character. She might be Peter's love interest and support system as he navigates the complex Web of Life. Another one could be Aunt May, who provides the home - like and moral support to Peter. Also, villains like Doctor Octopus or Green Goblin can appear, as they often cross paths with Peter in his adventures related to the Web of Life.
One of the most common characters is Ned Leeds. He could be Peter's gym buddy, always there to spot him or give him some friendly advice. Another would be MJ. She might show up at the gym to check on Peter or even join in on the workouts. Flash Thompson could also be a character in these fanfictions. Maybe he challenges Peter to a friendly competition at the gym.