Who might be the main antagonist in 'Harry Sues the Weasleys' fanfic?

Perhaps Harry sues the Weasleys because he believes they misused some of his fame for their own financial gain. For example, they might have used his name to promote their joke shop without his permission. And Harry, being fed up with this exploitation, decides to sue them to set things straight.

Hermione would most likely support Harry. She's always been his loyal friend and would see the injustice of the Daily Prophet's actions. She could help him research laws in the wizarding world (if there are any regarding slander or privacy) and also use her intelligence to find ways to counter the newspaper's claims.

In some cases, it could be that the magic system itself is the antagonist. For example, if there are ancient magical laws or curses that are affecting Harry's judgment and making him act against the Weasleys. The fanfic could then be about how they all fight against the constraints of this magic system to reconcile.

The main character is Harry. He drives the story as he decides to cook for the Weasleys. Among the Weasleys, Ron would be a significant character. He could be the one who gives Harry some ideas about what the family likes to eat. Ginny Weasley might also play a role, perhaps she's the first one to taste Harry's cooking and gives him an honest reaction.

It could be Voldemort or his followers. They might see Dumbledore as a major obstacle in their path to power. So they could manipulate Harry, perhaps through some mind - control magic or by spreading false rumors, to get Dumbledore fired. By removing Dumbledore, they hope to gain more control over Hogwarts and the wizarding world in general.

It could be Voldemort still. Since Harry is dabbling in dark magic by making a Horcrux, Voldemort might sense this and try to use it to his advantage. He could either try to steal Harry's Horcrux or manipulate Harry further into the dark side.

It could also be some external force that is manipulating Harry into believing the Weasleys are his enemies. For example, a dark wizard who wants to create chaos in the wizarding world by turning Harry against his friends. In this case, that dark wizard would be the main antagonist even though Harry is the one carrying out the revenge actions.

It could be Mr. Weasley. Since he's the head of the family, he might be the one driving the idea of taking the Potter fortune to better provide for his large family. He has the authority within the family and might think he's doing what's best in a tough situation.

Draco could be seen as the main antagonist. Since the title implies that Harry breaks his face, it's likely that Draco did something to provoke Harry in the first place. Maybe he was bullying Harry's friends or being his usual snobbish self towards Harry.

Hermione and Ron would most likely be his main supporters. They've always been by his side through thick and thin.