Well, in some fanfictions, Voldemort might see Harry as a tool to be used against his abusers. He could use this knowledge to manipulate Harry into joining his side, thinking that he can offer protection or revenge against those who have wronged Harry.
In other cases, Voldemort might be surprisingly empathetic in a very twisted way. He might decide to take out Harry's abusers himself, not because he cares about Harry's well - being in a normal sense, but more because he doesn't like the idea of someone else 'tarnishing' his archenemy. He may view Harry as his sole prey and not want anyone else to have that privilege. And also, it could be part of a bigger scheme to gain more power or control over the wizarding world by making himself look like some sort of dark avenger.
In this fanfiction, Voldemort's character is explored in a way that challenges our traditional view of him. His seeing Harry abused might make him reevaluate his relationship with Harry. He may start to see Harry not just as the Boy Who Lived who he wants to defeat, but as a person who has suffered, much like he might have in his own way. Harry, on the other hand, is stripped of some of his heroic facade. His abuse makes him more relatable in a sense. We can see his pain and how it affects his actions and decisions, and also how he reacts to Voldemort's new - found interest in his situation.
One possible consequence could be chaos. If Voldemort decides to use Harry's abuse as a reason to start attacking those he deems responsible, it could lead to a full - scale war within the wizarding world. Families could be torn apart, and allegiances would be tested as Voldemort's actions might not be seen as just by everyone.
Harry could also try to reason with Voldemort. He might remind Voldemort of the prophecies and how killing him might not be in Voldemort's best interest. He could also try to appeal to any bit of humanity that might still be left in Voldemort, although that's a long shot.
In this fanfiction scenario, the order's reaction would be complex. They are a group dedicated to fighting against the dark forces, and Harry is an important figure. When they find out he's been abused, they'd first ensure his safety. They could move him to a secret location, perhaps a safe house that only a few trusted members know about. Then, they'd start looking into the root cause of the abuse. Was it related to the ongoing battle against Voldemort? Were there traitors within their midst? They'd also need to consider how to handle the situation publicly, as Harry is somewhat of a public figure in the wizarding world. Their main goal would be to not only protect Harry but also make sure such abuse doesn't happen again to anyone else in their community.
Snape's reaction could be quite mixed. On one hand, he might be angry at Dumbledore for not doing more if he knew about the abuse. He may also feel a strange sort of empathy towards Harry. After all, Snape himself had a difficult childhood. So, he could start to be a bit more lenient with Harry in his classes and try to subtly offer support.
Well, Bellatrix is a very unpredictable character. In this fanfiction scenario, she could react with glee. Since she's on the side of the Dark Lord, she might think that Harry's abuse has made him more vulnerable. She could also be curious about who would dare to abuse 'the Boy Who Lived'. However, she might also be angry that someone else has been causing harm to Harry when she believes that's her Dark Lord's prerogative.
Often, Voldemort starts as this purely evil figure. But when he adopts Harry, he begins to show some unexpected softness. For example, he might start to protect Harry from other threats, which is very different from his usual self.
Yes, there are some fanfictions with this concept. It's an interesting take on the Harry Potter universe as it flips the typical relationship between Harry and Voldemort. In these fanfictions, the story often explores how Voldemort's actions change when he takes on the role of an adoptive figure to Harry, who has been abused. It can lead to some really unique character developments and plot twists.
Voldemort might initially be furious. He's not used to being challenged in such a blatant way. He could try to destroy the Howler immediately in a fit of rage.
In the fanfiction, if Ron finds out Harry is abused, it's a complex situation. Ron's reaction would be multi - faceted. Emotionally, he'd be a mess. He loves Harry like a brother. He might feel guilty for not noticing earlier. Ron would also start to view Harry in a new light, with more compassion and understanding. He would use his Weasley family connections to find resources or help for Harry. Maybe he'd ask his mother for advice or even get his older brothers involved if the abuse was from a powerful source within the wizarding world.