One popular 'evil harry is mated to tom' fanfiction is 'Dark Alliances'. It explores the complex relationship between an evil - leaning Harry and Tom in a really interesting way, with a lot of plot twists.
The character development in these fanfictions is a big part. Harry's transformation into an 'evil' version and how Tom responds to this new Harry. Their relationship also affects other characters around them, like their friends and enemies. There could be a lot of political intrigue in the wizarding world due to their mated status, as different factions might try to use or oppose them.
I'm not entirely sure. While there is a large amount of Harry Potter fanfiction out there, the specific 'harry is evil and mated' concept might be a bit more niche. It could be that it exists on some smaller fanfiction platforms or within certain groups of fans who like to explore darker and more unconventional storylines.
One common theme could be the exploration of power. If Harry is evil, his use and abuse of magic power in a different way than in the original story. And the'mated' aspect might bring in themes of loyalty and possessiveness in relationships that are twisted due to his evil nature.
The main characters are clearly Harry and Severus. Harry, in this fanfiction, is depicted as evil, which is a big departure from his original character in the canon. And Severus, who has his own complex personality, is mated to Harry.
One possible interesting plot could be the conflict it creates within the wizarding world. If Harry is evil and mated to Severus, it would shock everyone. Their relationship would likely be a source of great turmoil, with friends and foes alike trying to figure out how to deal with this unexpected union.
At first, the dynamic might be one of suspicion. Harry, being disabled, might be more cautious around Tom. But as time goes on, Tom could start to show kindness towards Harry, which might make Harry lower his guard. His mates, on the other hand, would be constantly watching Tom. As the story progresses, Tom might start to manipulate Harry's disability to gain more influence over him, which would create a more complex and strained dynamic between them.
It varies from one fanfiction to another. Some might depict it as a very magical and ritual - based process, perhaps involving special spells or potions unique to the fairy kind.
Harry could be characterized by his willingness to embrace the dark side. He might have a short temper and be quick to use his newfound dark powers. Tom would probably be the more calculating one, always thinking several steps ahead. He might be more patient in achieving his goals, while Harry is more impulsive. They both would share a sense of superiority over other students and a desire to break free from the traditional wizarding order.