Another possible main character could be a dragon that has a special connection to Harry. It could be his dragon parent or a dragon that has been watching over him. This dragon could help Harry in times of danger, using its own powerful magic and strength. And Harry would have to learn to communicate and work with this dragon as he discovers more about himself.
There could be a mysterious character who knows a lot about half - dragons and becomes Harry's mentor. This character could guide Harry through understanding his powers and the history of half - dragons in the wizarding world. And of course, there might be some antagonists too. Maybe some pure - blood wizards who see Harry's half - dragon nature as a threat to the purity of the wizarding race.
Obviously, Harry would be the main character. He is the one with the half - dragon nature. There might also be his friends like Ron and Hermione. They could play important roles in helping Harry deal with his new - found identity, whether it's by covering for him or helping him research about his dragon side.
In many 'HTTYD half - dragon fanfiction', Astrid can also be a main character. She could be the one who discovers the half - dragon first and has to deal with her own feelings about this new and strange being. Maybe she initially fears the half - dragon but then comes to understand and accept them. Also, there could be original characters created specifically for the fanfiction. For instance, a young Viking who was orphaned and later discovers they are half - dragon. This character would then have to navigate a world that doesn't understand them, while also trying to find their place among both humans and dragons. They might face discrimination from some Vikings who are afraid of their dragon - like features, but also find allies among those who are more open - minded, like Hiccup and his friends.
Obviously, Harry Potter is one of the main characters. Since it's a fanfiction about him as a dragon or related to dragons, he would be central. And I think Hagrid would also be an important character as he has a great love for magical creatures, especially dragons. He could be the one to help Harry understand his new relationship with dragons.
There could be other characters like his friends Hermione and Ron. They might play important roles in helping Harry understand and deal with his dragon inheritance. For instance, Hermione could research about it in the library, while Ron might offer his moral support and some practical advice from his own wizarding family's knowledge.
Often, the main characters can include the well - known Harry Potter characters like Harry himself. He might get involved with dragons in some way, perhaps during one of his adventures outside of Hogwarts. Another common main character could be a new, original character created specifically for the fanfiction. This character could be a dragon trainer or a researcher of magical creatures, with a special interest in dragons.
The main characters are Harry and Ginny. Harry is the central figure in the wizarding world's fight against Voldemort. Ginny, on the other hand, is not only important as Harry's love interest but also has her own strength and character. Sometimes, characters like Dumbledore or Snape might also play important roles in the fanfiction as they are closely related to the events in the Half - Blood Prince.
Often, Harry Potter himself can be a main character in these fanfictions, where his character might be reimagined in some way due to the presence of the half - demon element. For example, he could befriend or be in conflict with the half - demon character.
His friends from the original story could also be main characters. For example, Hermione might be there, constantly worried about Harry's dangerous dragon - riding adventures but also helping him with research about dragons and their habitats.
It could be an original character created by the fanfiction writer. Maybe a young wizard who stumbles upon the dragon ritual by accident and becomes the central figure in the story.
Hermione might also be a main character. With her vast knowledge of magic, she could be the one researching about the dragon, its habits, and how to deal with it. Maybe she discovers an ancient spell that can communicate with the dragon.
Obviously, Harry Potter would be one of the main characters. And the Dragon King, of course. There might also be Harry's friends like Hermione and Ron who could get involved in the story related to the Dragon King.