Draco Malfoy might show up in these fanfictions too. There could be a scenario where he tries to use the dragon spirit for his own dark purposes, or he might be forced to work with the heroes to deal with a dragon spirit that has gone out of control. Another common character is Hagrid, since he has a great love for magical creatures, and his knowledge of dragons could play an important role in the story.
Harry Potter himself is very common. Writers often put him in situations involving dragon spirits to see how he would react and grow. Hermione Granger is also popular as she could use her intelligence to study the dragon spirit, perhaps trying to understand its magic or origin.
Often, Harry Potter himself can be a character in these fanfictions. He might discover his hidden talent for taming dragons. Hermione could also be there, using her vast knowledge to help with the dragon - taming process. Ron could be the one who is initially scared but then warms up to the idea. And of course, Hagrid is likely to be involved as he has a great love for magical creatures, especially dragons.
Harry Potter himself is often a central character in these fanfictions. Since he was the one who originally faced the dragon task in the Triwizard Tournament, many fanfic authors like to explore different scenarios with him in the same situation.
Ron could also be there. He might be initially scared of the dragon but then grows to like it. His loyalty to Harry would make him support Harry's decisions regarding the dragon, even if they seem risky. For example, when they need to hide the dragon from the Ministry of Magic, Ron would be right there with Harry, coming up with crazy but effective plans.
It's hard to say for sure without reading it, but it could be Harry Potter himself. Since it's still within the Harry Potter universe, he might be the one to interact with the Spirit of Fire. Maybe Hermione could also be a main character, using her intelligence to figure out the secrets of the Spirit of Fire. Ron could be there too, providing his loyalty and friendship.
Hermione Granger is also a popular character. In some fanfictions, she uses her vast knowledge to study dragons in a way that no one has before. She could be researching dragon magic or trying to find a way to communicate with them on a deeper level.
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.
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.
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.
The main character is most likely Harry Potter as he is the focus of the transformation into a metal dragon. However, depending on the direction of the fanfiction, there could be new characters introduced. For example, a wizard or witch who has knowledge about metal - based magic or dragons could play a significant role. But the core characters from the Potter series, such as Dumbledore or Snape, may also be involved in different ways, perhaps trying to guide Harry in his new state or dealing with the implications of his transformation on the wizarding world.