Who could be a great antagonist in 'harry potter fourth year au fanfiction'?

Voldemort could still be the main antagonist. Even though Harry is alone, Voldemort would see him as a threat and continue to send his Death Eaters after him. Harry would have to face these attacks all by himself, which would make the story very intense.

Maybe in this fanfiction AU, the relationship between Harry and Hermione develops romantically during the fourth year. This would change the dynamics of their friendship and how they interact with Ron. They could face challenges together in the tournament, relying on their newfound feelings to get through difficult situations.

Luna Lovegood might also be a possible love interest. Her unique personality and view of the wizarding world could attract Harry in a different way. She's not afraid to be herself and is very open - minded. In an AU, Harry could see her in a new light and they could start a relationship based on their shared experiences of being a bit different from the norm in Hogwarts.

A half - vampire student. This character could have unique abilities like super speed and enhanced senses. They could be a bit of an outcast, but also have a mysterious allure and help Harry in unexpected ways, perhaps in dealing with the Dementors.

An old ex - Auror who now lives near Hogwarts. He could have a past connection to Voldemort and some knowledge about the Dark Arts used in the Triwizard Tournament. He becomes an unofficial mentor to Harry, teaching him some unique spells and strategies that are not part of the regular Hogwarts curriculum. This character could bring a new perspective and a bit of wisdom to the story.

You can start by changing a major event in the fourth year. For example, if the Goblet of Fire chooses not just one, but three Hogwarts students. This would lead to a whole different set of alliances and rivalries. Harry would have to share the spotlight and deal with more complex relationships within the tournament. Another way is to change the nature of Hogwarts itself. Maybe it becomes a co - educational school with a new set of rules and traditions that clash with the old ones. This would create a lot of chaos and new storylines for the fourth - year students.

One interesting AU could be a world where the Triwizard Tournament is open to all years. This would change the dynamic completely as younger students might participate, bringing in different skills and strategies. Another could be an AU where Voldemort never came back in the fourth year, and instead, a new dark wizard rises to power in Hogwarts, creating a different kind of threat for Harry and his friends. A third concept could be an AU where the Hogwarts houses are mixed up for the fourth - year students, forcing them to work with those they usually wouldn't and leading to unexpected friendships and rivalries.

Harry Potter himself would most likely be one of the main characters, as it's about his fourth year and retribution. Hermione and Ron would probably also be important, as they are his closest friends and often involved in his adventures.

Dobby the house - elf can be a popular character in these fanfictions. Writers might have Dobby helping Harry in more creative ways during the Triwizard Tournament. Professor McGonagall is also a favorite, as her strict but fair nature can be explored in different situations during the fourth year. And of course, Sirius Black might make appearances in fanfictions, adding a layer of mystery and family connection to Harry's fourth year.

One underrated character who could have a bigger role is Seamus Finnigan. He's always been on the sidelines a bit, but in a 7th year au, he could be a key figure in the Gryffindor resistance against the Death Eaters at Hogwarts. His skills in charms and his Gryffindor courage could be put to great use. Also, Professor Trelawney could be more important. She might have a real, accurate prophecy in this au that she shares with Harry. Her knowledge of divination could be the key to understanding some crucial aspect of Voldemort's downfall, rather than just being seen as a bit of a joke like in the original story.