A new character could be the main character in this fanfiction. Maybe a transfer student from a far - off magical school who has the siren inheritance. This character would bring in a fresh perspective to the Hogwarts environment. They would have to learn about the ways of Hogwarts while also dealing with the challenges and opportunities that come with their siren heritage, and make new friends and enemies along the way.
A descendent of an old wizarding family that was once involved with Nundu. This character might be a Gryffindor, brave enough to face the challenges that come with the inheritance. They could be a bit of a rebel in the wizarding world, not afraid to break some rules to understand and control their new powers related to the Nundu.
It could be a new student at Hogwarts. A young witch or wizard who has no idea about their mermaid inheritance until strange things start happening, like being drawn to water or having dreams about the ocean. This new character would bring a fresh perspective to the Harry Potter universe and their journey of self - discovery would be exciting to follow.
Maybe a dark wizard who has an interest in Harry's newfound inheritance. This antagonist could want to steal his powers or use him for their own evil purposes. They might see Harry as a key to unlocking some ancient and powerful magic that they've been seeking.
An older character like Hagrid could also be the main character in an inheritance - based fanfic. What if Hagrid discovers he has an inheritance from a long - forgotten giant tribe? This could change his relationship with the wizarding world and his role in protecting the school and its students.
Well, in this type of fanfiction, perhaps a plot point is the discovery of the siren inheritance. Maybe a character who was previously unaware of their heritage suddenly starts to show siren - like traits, like an alluring voice that can charm or manipulate others. This could lead to them being both feared and desired within Hogwarts, and they have to navigate through this new identity while also dealing with the regular Hogwarts drama.
I'm not familiar with the exact fanfiction 'Lure of the Siren', but it's common in Harry Potter fanfiction for the main characters to be either the beloved trio - Harry, Hermione, and Ron - who get caught up in the siren - related mystery. However, it could also focus on other characters such as Neville, Luna, or even some original characters created by the fanfiction author. If the siren aspect is related to a particular house in Hogwarts, say Slytherin, we might see Draco Malfoy or other Slytherins as main characters dealing with this alluring and dangerous situation.
Voldemort could still be the main antagonist. His dark magic would be in direct contrast to Harry's angel inheritance. He would see Harry as an even greater threat now and would do everything to stop Harry from fully realizing his new powers.
Harry Potter himself could be a main character. Given his central role in the original series, it would be interesting to see how he navigates a harem inheritance situation.
It could be a dark wizard who wants to steal Harry's inheritance for his own gain.
It could be a new character, perhaps a young witch or wizard who has just received their Hogwarts letter and then discovers this inheritance. This would be an exciting start to their magical journey.