Marge can help with world - building in the fanfic. Since she represents the Muggle perspective, her reactions and opinions can be used to further explain how the wizarding world and the Muggle world co - exist in the story's universe. For example, her disbelief or shock when she accidentally stumbles upon something magical can show the boundaries and secrecy between the two worlds.
One way Marge can help is by being a plot device. Her presence can force the wizard characters to be more cautious about using magic, which adds tension to the story. For instance, if they are in a situation where Marge is nearby, they have to hold back their magical abilities, and this can lead to some interesting and suspenseful scenarios.
One possible plot could be that Aunt Marge discovers Harry's difficult situation at the Dursleys and decides to secretly help him with his magic studies. Maybe she has a change of heart after seeing how much he's struggling.
Dobby sometimes helps Harry Potter in fanfiction by summoning other magical creatures to assist. For example, he could call upon friendly centaurs or house - elves from other families who are sympathetic to Harry's cause. This creates a sort of magical alliance around Harry, which is really cool. Dobby's social network among the magical beings is something that is often explored in interesting ways in fanfiction.
One main way is through his magical knowledge. Harry has learned a great deal during his time at Hogwarts, and this knowledge can be applied to building projects in fanfiction. Another way is his influence. As the Boy Who Lived, he can persuade others to contribute to Hogwarts' development. Also, his courage allows him to take on challenges related to building, like exploring dangerous areas of the castle to find ways to improve it.
One way is through his magical transportation methods. The Floo Network or Apparition could be used to quickly move the Avengers around. Harry could also use his wand to perform healing magic on the injured heroes.
One possible plot could be that Marge, despite her initial rough exterior, discovers a soft spot for Harry. She might start to teach him some of her own values, which could be a mix of traditional and rather strict ones. Harry would have to adjust to living in a new environment with Marge's dogs and her no - nonsense attitude.
In Harry Potter fanfic, Marge could help by providing a contrast to the wizarding world. For example, her Muggle - centric views and often - bigoted opinions can highlight the differences between the magical and non - magical communities. This can add depth to the story as characters interact with her and either oppose or are influenced by her ideas.
One possible plot is that Harry discovers a hidden prophecy that says only by helping Voldemort can he truly save the wizarding world in the long run. So, he reluctantly starts to assist Voldemort in his conquests, all while secretly planning to turn the tables.
Aunt Marge could be developed by showing her having a moment of self - reflection. She might realize that her harsh treatment of Harry was wrong and start to be more empathetic. For example, she could see Harry's kindness towards animals and that could change her view of him.
The most interesting way Dobby helps Harry Potter in fan fiction might be his ability to manipulate the rules of the house - elf magic in creative ways. For example, he might find a loophole in the magic that binds him to his master's commands and use it to Harry's advantage. He could use his loyalty to Harry as a driving force to break free from the traditional limitations of a house - elf's magic and perform feats that are not only helpful but also quite unexpected and exciting for the story.
She uses her knowledge of magic. For instance, if the trial involves a magical crime, she can explain complex magical concepts to the court. This helps in determining the nature of the crime and whether it was intentional or accidental. She also has a great memory, so she can recall past cases or events that are similar, which can be used as references in the current trial.