It might be. There are a lot of fans who like to see different takes on the relationships between characters in the Harry Potter universe. If the fanfiction is well - written and the idea of Harry having 'fun' with Umbridge is presented in an interesting way, it could attract a fair number of readers.
In such a fanfiction, perhaps Harry manages to outwit Umbridge in a really humorous way. For example, he could use his magic in unexpected and comical situations to get the better of her strict rules.
Fred and George Weasley are also favorites. Their mischievous nature can be amplified in fanfictions. They could create new and even more spectacular magical pranks specifically aimed at Umbridge, like turning her office into a never - ending maze of trick stairs and hidden rooms filled with various magical creatures that drive her crazy.
Another idea is a time - travel fanfiction. Harry goes back in time and has to deal with Umbridge when she was a student. He tries to change her path so that she doesn't become the horrible person she is in his time. This could involve him befriending her and showing her the value of kindness and freedom.
There's also a fanfic called 'Umbridge Unmasked'. This one shows a different side of Umbridge. Instead of just being a one - dimensional villain, it explores her insecurities and how they drive her actions. It's an interesting take on her character that makes you think more about her role in the wizarding world.
In Harry Potter fanfiction, rebellion against Umbridge is a popular theme. Many writers explore how the students, like Harry and his friends, might resist her tyrannical rule. They often show creative ways the characters use magic or their wits to undermine Umbridge's authority. For example, they might form secret study groups that are actually resistance cells.
Hermione is a must. Her intelligence and extensive knowledge of magic and Hogwarts rules would be invaluable. Ron would be involved too. He's Harry's close friend and has a bit of a mischievous streak himself. Fred and George Weasley are very likely to be part of it. They are known for their love of pranks and their dislike of authority figures like Umbridge. Luna Lovegood could also be included. She has a unique perspective and might come up with some really out - of - the - box ideas for Harry's revenge on Umbridge. Plus, her presence would add an interesting and somewhat dreamy element to the whole revenge plot.
It could be that the fanfiction used Harry's likeness without permission in a way that was harmful to his image. Maybe it had Harry involved in illegal or immoral activities that he would never do in the original series, so he decides to take legal action against the author of the fanfic.
She would probably be outraged. Umbridge is a strict and conservative character in the original series. Fanfiction often contains ideas that deviate from the 'canon' she adheres to, and she might see it as a threat to the 'proper' understanding of the wizarding world she believes in.
One interesting fanfiction could be about Umbridge getting a taste of her own medicine. Maybe the students use magic in a clever way to make her face the consequences of her cruel actions without getting caught themselves. Another could be a story where Umbridge has a change of heart due to some magical event that shows her the error of her ways, but still has to face the wrath of the students she's wronged. And there might be a fanfic where Umbridge is transported to a different magical world and has to learn to adapt and deal with new rules and cultures.