Who could be the prince in 'harry potter marries a prince fanfiction'?

The plot might be that the prince has been sent to the wizarding world on a diplomatic mission. Harry Potter is assigned to show him around. Along the way, they get to know each other better. There could be a ball or a grand event where they realize their feelings for each other. And then they have to deal with the politics and magic - related issues that come with their relationship, like how to combine the rules of the wizarding world with the protocols of the prince's realm.

It could be an ancient and powerful dark wizard who has been dormant for a long time. Maybe someone from the time before Hogwarts was even founded.

It could be a new villain that the fanfiction author has introduced. Maybe a long - lost relative of Voldemort who has emerged to continue his dark legacy.

Hermione would definitely be one of his allies. She is smart and resourceful and would be able to help Harry navigate the new political and magical situations he faces as a prince. For example, she could research ancient laws and prophecies related to his new status.

Maybe the prince is from a neighboring magical country. For example, he could be from a place like Beauxbatons or Durmstrang. He comes to Hogwarts on an exchange program of sorts and that's where he meets Harry and decides to court him. This would add an element of international magical relations to the fanfic.

Another idea is that the 'Black Prince' is a self - proclaimed title of a character who has risen within the ranks of the Black family. He might be a younger wizard who has discovered some hidden power within the family heritage and decided to use it for good or evil, depending on how the story is written.

In this fanfiction, the Dark Prince might find allies among those who have been wronged by the Ministry of Magic. If there are wizards who have been unjustly punished or whose families have been persecuted, they could be swayed to join the Dark Prince. There could also be some international dark wizards who see an opportunity to expand their influence in the British wizarding world through an alliance with the Dark Prince. Another possibility is that there are some dark entities from other dimensions or realms that the Dark Prince manages to summon and convince to be his allies.

There could be some disillusioned wizards who have lost faith in the current state of the wizarding world. They might see the Dark Prince as a way to change things, even if his methods are dark. These wizards could be those who have been marginalized or have suffered losses during the war. They believe that the Dark Prince has a vision for a different kind of wizarding society, not realizing the full extent of his dark intentions.

Snape himself could also be considered as the 'Prince of Slytherin' in some fanfictions. Given his complex relationship with both Slytherin house and Harry, a fanfiction could explore a scenario where he is given this title due to his deep connection to Slytherin's heritage and his own role as a double agent, which in a way makes him a sort of prince - like figure within the Slytherin world.

The Ministry of Magic would likely be an enemy. They are all about maintaining order and the Demon Prince's actions might be seen as a threat to that order.