Well, he might face jail time in the context of the fanfic world. Maybe the wizarding authorities will confiscate his ill - gotten gains too.
In fanfics, he could be ostracized by the wizarding community. Since stealing is a serious offense, his reputation would be severely damaged. People might not trust him anymore, and he could lose business if he has any sort of trade going on. He might also be forced to make restitution to Harry. If there are magical laws in the fanfic similar to the real world, he could be fined heavily as well.
In some fanfics, there could be a magical creature or spirit that Mundungus has befriended in the past. This creature or spirit, being loyal to him, might try to help him in some way. It could be a house - elf that he once helped, and now the house - elf wants to return the favor. Or it could be a magical bird that can carry messages and tries to find someone to assist Mundungus in his predicament.
One consequence could be that he unknowingly steals something that has a powerful and dangerous magic attached to it. This could put him in great danger as he may not be able to control or understand the magic. It could also lead to a chain of events that disrupt the balance of the wizarding world, as things from Gringotts often have a long - standing significance and influence.
One possible reason could be that Dumbledore believes he is acting in Harry's greater good. Maybe he thinks that by taking certain items from Harry, he can protect them from falling into the wrong hands. For example, if Harry has a powerful magical artifact that Voldemort desires, Dumbledore might steal it to keep it safe.
In the fanfic, the Dementors could also be a major factor in the consequences. Since Harry escaped from their custody, they might be more vigilant and harsher in their patrols. This could lead to a more oppressive atmosphere in the wizarding world, with people living in fear of the Dementors' increased presence. Also, Voldemort or his followers might try to take advantage of the chaos caused by Harry's escape to further their own dark agendas.
On the other hand, not competing might lead him to find alternative paths. He could start his own non - competitive projects or groups, which could have a big impact on the fanfic's community in a different way. For example, he could form a study group for magic that focuses on sharing knowledge rather than competing for grades or status.
Well, the legal consequences can vary widely. In some places, if it's his first offense and the obscene stories didn't cause widespread harm, he might get off with a warning and a small fine. But if it's a repeated offense or if the stories were distributed to minors, he could be looking at more serious penalties like imprisonment for a certain period and mandatory counseling to correct his behavior.
He could face serious criminal charges such as child endangerment or promoting harmful content related to minors. Prison sentences are likely, depending on the jurisdiction and the specific nature of the stories.
One consequence could be a split in the friendship group. If Harry hates Ginny, Ron, being Ginny's brother, would be in a difficult position. It could lead to a divide between Harry and Ron as well.
He might avoid any events or communities related to magic fanfic. He won't be interested in reading or discussing them.
Well, in the 'ginny cheats on harry fanfic', a consequence might be that Ginny loses the trust of those around her. Harry might become more guarded in future relationships. Their families would also be affected. For example, the Weasley family might have to deal with the fallout and try to understand why Ginny did such a thing. And Ginny herself could end up feeling very guilty and regretful.