Maybe Vernon is under some kind of dark influence. He has always been mean to Harry, but in this story, it gets worse. The beating could be a way to show the extreme power imbalance between the Muggle world (represented by Vernon) and the young wizard Harry. It could also lead to a series of events where Harry has to find a way to protect himself from Vernon without using magic that would expose the wizarding world to Muggles.
Well, perhaps Vernon might beat Harry out of his extreme dislike for magic. He could be enraged by some accidental magic Harry does at home and lose his temper completely.
It might be a fan who was really intrigued by the relationship between Harry and Vernon and decided to take it to an extreme in their writing. There are so many fanfiction writers out there, some write for fun, some to explore different character dynamics. So, it could be anyone really.
In this kind of fanfiction, perhaps Harry, out of fear or some form of coercion, starts to obey Uncle Vernon's every order. Maybe Vernon uses threats about expelling Harry from the house or withholding food to make him submit. This could lead to a very different dynamic in the Dursley household, with Harry being more submissive and not showing his usual defiance.
In this fanfiction scenario, it could be that the writer decided to change the power dynamics completely. Vernon, who is usually just a Muggle bully in the original, might be given some unexpected power or weapon in the fanfic. And Harry, perhaps caught off - guard or having lost his magic temporarily, could be killed by Vernon. It shows how fanfiction can turn the whole story upside down.
Vernon might be jealous of Harry's magical abilities. He could see Harry as a threat to his 'normal' family life and his authority in the household.
One possible plot could be that Harry shows a special talent early on that Vernon and Petunia recognize as something extraordinary. This makes them see Harry not as a burden but as a valuable part of the family. They then start to love and protect him, and this changes Harry's life completely. He no longer has to endure the abuse and neglect he faced in the original story.
One possible plot could be that Harry, through some magical mishap, is transformed into a small animal and Vernon, instead of being his usual cruel self, finds himself oddly attached to this new form of Harry. He might start to protect Harry from other threats in the wizarding world, not fully understanding what he's gotten into but feeling a sense of responsibility.
In some dark fanfiction scenarios, Vernon might kill Harry Potter out of his extreme hatred and fear of magic. Maybe he discovers Harry's magic in a moment of rage and overreacts, using a weapon or his brute force to end Harry's life. However, this goes completely against the essence of the original series where Vernon was more of a bumbling, non - magical threat.
Harry might initially be in shock. He could feel a mix of anger and helplessness. Maybe he'd try to hold back his magic out of fear of getting into more trouble with Vernon.
If Vernon kills Harry Potter in fanfiction, it implies a breakdown of the safety net that was supposed to protect Harry. It also shows how a non - magical person can have a catastrophic impact on the magical world. This could lead to a re - evaluation of the relationship between Muggles and wizards in the fanfiction. It might also inspire other characters to take up the fight against Voldemort in a more vengeful way, as they would be avenging Harry's death.
The 'harry potter gagged by vernon fanfiction' could be about a particular situation where Vernon restricts Harry Potter's ability to speak. This might be part of a larger plot in the fanfiction. For example, it could be set in a scenario where Vernon has discovered some of Harry's wizarding secrets and in an attempt to keep them from getting out, he gags Harry. Or perhaps it's a more psychological exploration where Vernon's abuse of Harry takes on a new form of silencing him, and the story could then delve into how Harry overcomes this obstacle, or how it affects his relationships with other characters like Hermione and Ron.