In fanfiction, the 'Harry Potter Demon of Fire' could play a mysterious role. It could be an enigma that draws in curious wizards, some of whom might end up being corrupted by it. It could also be a source of new magical knowledge. For example, if the demon is defeated, it could release a wave of ancient magic that the wizards can then study and use to their advantage. However, it's also likely to be a very dangerous entity that requires a great deal of skill and courage to deal with.
In fanfiction, the 'Demon of Fire' in Harry Potter could be a really cool and unique creation. It might be a powerful and dangerous entity, perhaps related to dark magic. Maybe it's a new threat that Harry and his friends have to face, adding an exciting new plot twist to the story.
One possible role is as a plot device to create conflict. For instance, if a group of students gets lost in a part of the Hogwarts grounds where man - eating plants are, they have to find a way to escape. This can drive the story forward and show the characters' growth and problem - solving abilities.
One possible role is that of a savior. Just as Harry was seen as the one to defeat Voldemort, the forgotten brother could have an even greater destiny. He might be the one to finally bring true peace to the wizarding world. Another role could be as a villain. Maybe he was left out and forgotten for so long that he harbors a deep resentment towards his family and the wizarding world in general. He could then seek revenge on those who ignored his existence.
A possible plotline could be that Harry's fire - controlling power is seen as a threat by the Ministry of Magic. They try to suppress it, thinking it's dark magic. Harry then has to fight against the Ministry's unjust rules to prove that his power can be used for good, like helping to fight against the remaining Death Eaters.
One possible role is that the ring serves as a key to a hidden magic. Maybe it unlocks a secret chamber or a powerful spell that only Snape, with his knowledge, can figure out how to use for Harry's benefit.
Monsters can also be used to explore different aspects of the wizarding world's magic. Their unique abilities can lead to new magical theories or explanations in fanfiction. For example, how the magic used to control a certain monster might be related to an ancient and forgotten branch of magic.
One plotline might be that the dog demon is actually a cursed form of a wizard. In the fanfiction, it tries to find a way to break the curse while being in the midst of the Harry Potter universe. It could get help from Dumbledore or other powerful wizards. This would involve a lot of mystery and exploration of the magical lore of both the dog demon's nature and the wizarding world's magic.
One possible theme could be identity struggle. Harry, as a wolf demon, would have to deal with his new identity on top of his existing one as the Boy Who Lived. Another theme might be isolation, as his new form could make him an outcast.
In a 'Harry Potter is a Fox Demon fanfiction', the plot might start with Harry having strange dreams about fox demons. As he investigates, he finds out that his family has a long - lost connection to the fox demon realm. He then embarks on a journey to learn more about his heritage. Along the way, he meets other characters who are also related to fox demons in some way. They might form a group to fight against an evil force that is trying to use the power of fox demons for their own dark purposes. This could involve battles in both the wizarding world and the fox demon realm, with Harry having to use his knowledge of magic and his new fox demon abilities to protect his friends and the two worlds he now belongs to.
Some fanfictions feature birds as the key to solving a mystery. For instance, a particular bird's song might hold the clue to unlocking a hidden chamber or a secret spell. The characters have to study the bird's behavior and sounds carefully to progress in their quest.