Maybe an old enemy of Wakanda from within their own land who has made a pact with a dark wizard from the Harry Potter universe. This combined force of internal betrayal and external dark magic could be the main villainous force. For example, a Wakandan who was exiled for his evil deeds teams up with a wizard who was also shunned in the wizarding world, and they plan to take over Wakanda and use its resources for their own gain.
It could be some Death Eaters who have made a deal with a Wakandan traitor. They might want to steal Wakanda's vibranium to make powerful dark magic items. The Death Eaters' dark magic would pose a serious threat to Wakanda's peace and stability.
It could be Death Eaters who have a new plan. They might want to create chaos in the Muggle world by targeting the Queen. They see her as a symbol of Muggle power and order, so by attacking her, they hope to disrupt the Muggle - wizard relationship.
Well, perhaps Harry could use his magic to defend Wakanda from some dark force. Maybe Voldemort has an alliance with an enemy of Wakanda and Harry has to stop them. He could use spells like Protego Maxima to shield Wakanda's borders and use the Patronus charm to fend off the Dementors that the villains might send.
Voldemort would still be a likely villain. He is the main antagonist in the original series and his threat to Harry is always present. Even if Harry is trying to save himself, Voldemort's power and his desire to kill Harry would make him a formidable foe.
The Death Eaters are a likely choice. They might target Susan Bones because of her family's connection to the wizarding world. For example, her aunt Amelia Bones was a well - known figure, and the Death Eaters could be after something related to her or the Bones family in general.
It could be some of the remaining Death Eaters. They might target Amelia Bones because she is a powerful and important figure in the Ministry of Magic. Her knowledge and influence could be a threat to their plans of resurrecting Voldemort's ideology or causing more chaos in the wizarding world.
Another potential villain could be an ancient Wakandan enemy that was once thought to be defeated. But with Spider - Man now in the role of king, they see it as an opportunity to strike. This enemy might have some dark magic or long - forgotten technology that they use against Wakanda. Spider - Man would have to quickly learn about this enemy's history and weaknesses in order to protect his new kingdom.
Perhaps a dark wizard from the Harry Potter universe who has heard about the Cullens' unique vampire abilities and wants to harness that power for himself. He could be a follower of Voldemort who escaped the final battle and is now looking for new ways to gain power. So he targets the Cullens, thinking their powers can help him rule both the wizarding and vampire worlds, and Harry has to stop him.
Maybe a new character could be created as the main antagonist. A dark wizard who has infiltrated the Capitol and is using the Hunger Games as a means to create chaos and destruction. He could be more powerful than Voldemort in some ways and would be a great challenge for Harry and Katniss to overcome.
Well, in such a fanfiction, Harry Potter as the King of Wakanda would likely bring a new form of leadership. His values from the wizarding world, like loyalty and courage, would shape Wakanda. He might face challenges from those who are skeptical about a non - Wakandan leading. But he would use his magic to prove his worth. He could create magical defenses for Wakanda and also use magic to improve the living conditions of the people, especially in areas where technology alone couldn't reach.
Obviously, Harry Potter and the Jedi would be the main characters. Maybe Luke Skywalker and Harry could form an alliance.