Who could be the main antagonist in 'Harry Potter finds a lightsaber fanfiction'?

It could be a dark wizard who also has an interest in the snake. Maybe he wants to use the snake's powers for evil purposes, like opening a portal to a dark dimension or controlling other magical creatures. So he becomes the main obstacle for Harry as he tries to protect the snake.

In this fanfiction, Harry could potentially use the lightsaber to his advantage in battles against dark wizards. The lightsaber's unique cutting ability could be a great asset. He might also face challenges like having to keep it hidden from the Ministry of Magic which doesn't recognize non - magical weapons. And there could be a whole plot about where the lightsaber came from, like if it was brought to the wizarding world by a mysterious traveler from another dimension.

In this fanfiction, the main antagonist could be an ancient evil that has been trapped within the grimoire. Once Harry finds the grimoire, this evil starts to gain power and tries to use Harry to break free completely and spread chaos in the wizarding world.

Obviously, Voldemort could still be the main antagonist. He would be intrigued and threatened by Harry's new power, the lightsaber. Also, some Death Eaters might team up with dark wizards from other lands who are also after the power of the lightsaber.

It could be a new dark wizard who has been secretly searching for the Death Stone. Maybe someone who was in the shadows during Voldemort's time and now sees an opportunity to rise with the power of this stone.

It could be Voldemort. Imagine he gets wind of Harry having this powerful Wolf Zord. He would stop at nothing to get it for himself, seeing it as a means to finally defeat Harry and take over the wizarding world completely.

It could be a dark wizard who wants to use the living werewolf hide for some dark magic. Maybe he wants to create an army of werewolves under his control.

Well, in theory, it could. Fanfics often like to blend different fictional universes. However, in the official Harry Potter lore, there are no lightsabers. But in a fanfic, an author could come up with some creative magic or a cross - universe event that brings lightsabers into the wizarding world. Maybe a powerful wizard discovers a way to create a weapon similar to a lightsaber using magic and some rare materials.

Perhaps a long - lost relative of the Potter family who feels they were unjustly excluded from inheriting the manor. This relative could be jealous of Harry's status and the wealth associated with the manor. They might use dark magic to try and claim what they think is rightfully theirs, leading to a battle of magic and loyalty within the Potter family and among Harry's friends.

Maybe an old wizard who has been secretly studying the combination of different magical universes for years. This wizard could have made some initial attempts at building a lightsaber - like weapon in the past and can share his experiences and mistakes with Harry. He would teach Harry about the balance between the light and dark side of this new form of magic, just like the Jedi teachings in Star Wars.