In this fanfiction, Luna Lovegood could be an interesting addition. She might have some unique insights into Harry's metamorphmagus ability since she often has a different perspective on magic. The Weasley family as a whole could also be involved. Mrs. Weasley might be worried about Harry's new ability and try to mother him, while the twins could see it as an opportunity for some pranks or to develop new magical products. And then there's Hagrid, who would surely be there to offer his big - hearted support.
Some of the teachers at Hogwarts could be involved as well. Professor McGonagall, for instance, might teach Harry some advanced Transfiguration magic. And Snape, before his death, could have left behind some notes or knowledge about Potions - related magic that Harry discovers and uses to learn more powerful potions and the magic associated with them.
Obviously, Harry Potter himself would be the central character. His friends like Hermione and Ron would probably also be there, as they often play important roles in his life and growth. Maybe some of the teachers like Dumbledore or McGonagall could also be involved to guide Harry in learning these new 'facts of life'.
Well, one possible plot development could be Harry struggling to control his newfound ability at first. He might accidentally change his appearance in embarrassing situations, like during a Quidditch match or in front of his crush. Another could be that he discovers he has a special connection to other metamorphmagi in the wizarding world, leading him on a journey to find out more about his heritage.
Obviously, Harry himself is the central character. Then, there could be characters like Dumbledore who might play a role in guiding Harry about his new heritage. Hermione would also likely be involved, using her knowledge to help Harry understand the Pendragon history.
Dumbledore could also play a role. He might see Harry's weight loss journey as part of his overall growth and offer some cryptic yet inspiring words. Maybe he arranges for Harry to have special training sessions with the ghosts of Hogwarts, who have unique ways of making exercise fun. And of course, the Hogwarts professors like Madam Pomfrey could be involved, ensuring Harry's health during his weight loss process.
Obviously, Harry Potter himself is the central character. Hermione Granger and Ron Weasley are also very likely to be involved. They might try to help Harry regain his hope. Dumbledore, even if he's dead in the original story, could appear in flashbacks or as a guiding spirit, trying to inspire Harry. Snape could also be part of it, as his complex relationship with Harry could add more depth to the story of Harry losing hope.
Neville could be involved too. He has grown into a strong wizard and would surely want to help his friend. Ginny, who has a special connection with Harry, would be at his side constantly. There could also be some new characters introduced, like a healer from a far - away land who has unique knowledge about Harry's condition.
Obviously, Harry himself is the most important character. His journey of learning about his heritage is at the core of the story.
Snape is a character that could play a major role. Given his past with dark magic, he might be a reluctant mentor to Harry, guiding him in understanding the power and danger of it. Dumbledore, too, would likely be in the story, as he is always concerned about Harry's well - being and actions.
There could be some original Muggle characters created just for the fanfiction. Maybe a friendly Muggle neighbor who is always curious about Draco's strange ways and in turn, makes Draco curious about the Muggle world. This neighbor could introduce Draco to things like Muggle sports, like football, which Draco would find both strange and exciting.