Sometimes, there are original characters created specifically for the 'Harry Island' fanfic. These could be local island wizards or witches who have their own backstories and motives. They interact with Harry and the other familiar characters, adding new dimensions to the story.
Obviously, Harry is one of the main characters. He's usually at the center of the story, driving the plot forward with his actions and decisions.
There are often other characters from the original Harry Potter series. Hermione might be there, using her vast knowledge to help Harry out in the new and strange situations on the island. Ron could also be present, providing some comic relief and loyalty as he always does.
There could also be a group of misfit characters. Maybe they are students who didn't fit in at Hogwarts for some reason and found their way to Potter Island. Together, they form a sort of 'found family' and have to work together to face the challenges that the island presents.
A young and ambitious trainer who has come to Poni Island to prove themselves could be a main character. They are eager to explore the island, catch new Pokémon, and rise in the ranks of the local Pokémon community.
There might be a castaway who has to adapt to the island life. There could also be a group of sailors who end up on the island by accident. Among them, there may be a leader figure who tries to keep everyone in order and find a way to get off the island. Additionally, there could be a local on the island who helps or hinders the outsiders depending on the story's direction.
Hermione could be one. She might follow Harry to the island to help him out. Another could be Ron, his loyal friend. Or it could be some new characters created specifically for this fanfiction, like a wise old wizard who has been living on the island for centuries.
Obviously, the female donkey would be one of the main characters. And there could be a friendly seagull that helps her navigate the island.
Obviously Naruto would be one of the main characters. Sakura could also be there. She could use her medical knowledge to figure out if the lemons have any special healing properties.
In 'Harry and Teddy fanfic', the two main characters are Harry and Teddy. Harry is the one who has been through so much in the wizarding world. He has a sense of responsibility towards Teddy. Teddy is a character full of possibilities. He's the product of a tragic event (his parents' death), and Harry's presence in his life is like a guiding light. Their personalities, Harry's wisdom and Teddy's eagerness to learn, are often explored in these fanfics, which makes for very engaging stories.
In some fanfics, there could be magical animals other than crows. For instance, a wise old owl that serves as a mentor to Harry. The owl could give Harry advice on how to deal with various situations, such as when he is facing a difficult choice or when he is in danger. These additional characters add more depth and variety to the fanfic stories.
Then there might be some souls that Harry has a special connection with. These souls could be recurring characters, each with their own backstory and personality, and their interactions with Harry would drive the story forward in different ways.
Harry is the central figure. But there could also be other students who become aware of Harry's situation. For example, Hermione might be a key character. She could be researching ways to either help Harry or deal with the consequences of his transformation. And then there could be a new character, perhaps a magical cat - keeper in the Forbidden Forest who has some knowledge about cat - like magic and can offer assistance to Harry.