Another character often used is Hermione Granger. Given her intelligence and strong sense of right and wrong, she could raise Harry in a very studious and morally upright way. She might also use her vast knowledge of magic to give Harry an edge in his magical education.
Some fanfictions feature Narcissa Malfoy as Harry's adopted mother. This creates a really interesting dynamic as she's from a Slytherin family. Her motives for adopting Harry could be complex, perhaps related to a change of heart after seeing the destruction of the wizarding world during the war.
Luna Lovegood is a popular choice. Her unique view of the world and kind nature could make her an interesting adopted mother for Harry. She could introduce him to all sorts of strange and wonderful magical creatures and concepts that he might not have encountered otherwise.
Sometimes, the adopted family's servants or helpers can be popular characters. If Harry is adopted by a wealthy wizard family, their house - elves or other magical servants might play important roles. They could be the ones who first notice Harry's special needs or abilities and help him adapt to his new environment. They might also provide some comic relief in the story.
Obviously, Harry Potter is one of the most important characters. Then there are the Flamels. Nicolas and Perenelle Flamel are central as they are the ones adopting Harry. Dumbledore might still play an important role as he has a connection to Harry and also to the Flamels in the wizarding world. Voldemort would also be important as he is Harry's main enemy, and the change in Harry's situation due to the adoption could affect their ongoing battle.
One popular 'Harry Potter adopted fanfiction' story is 'The Adopted Heir of Slytherin'. It explores the idea of Harry being adopted into a different family within the wizarding world and how that changes his journey at Hogwarts. Another one could be 'Adopted by the Weasleys', which gives a heart - warming take on Harry growing up as part of the Weasley family. There are also some darker ones like 'Adopted by the Dark Lord' where the plot takes a very different and often more complex turn.
Obviously, Harry Potter and Saitama are the main characters. Harry is the well - known wizard from the Harry Potter series, and Saitama is the super - strong hero from One Punch Man. Their interactions would be the central focus of this fanfiction.
One of the main characters would be Harry Potter himself. As for the Creepypasta side, Slenderman is a very likely character. He is often portrayed as a powerful and mysterious figure in the Creepypasta world. Another could be Eyeless Jack. He might be interested in Harry's magic or see him as a potential threat.
Harry Potter himself can be a common character in such fanfiction. Maybe in these stories, he has an adopted sibling or a new family member through adoption, which changes the dynamics of his relationships. For example, if he has an adopted Muggle - born sister, he might have to protect her more fiercely from the Death Eaters.
In addition to Harry and his adoptive Veela family, there might be some of Harry's friends from Hogwarts who are also important characters. For example, Hermione and Ron. They might react in different ways to Harry's new situation. Hermione could be curious and try to research more about the Veela, while Ron might be a bit more hesitant or even jealous at first. Their interactions with Harry as he navigates his new life with the Veela would add depth to the story.
Perhaps his adopted mother is a Muggle with a special connection to the magical world. She raises Harry in a Muggle - like environment but also imparts some ancient magical wisdom she's inherited. This would create an interesting dynamic where Harry has to balance his two different worlds even more so than in the original story.
In this fanfiction, Harry Potter is bound to be central. Given the title, his mother Lily Potter is a key figure. But other characters could also play significant roles. For instance, Dumbledore might be involved as he often guides Harry. And perhaps some of the antagonists like Draco Malfoy could also be part of the story, either in opposition to Harry's new - found gift or in some way related to the discovery or use of it.
They're popular because they offer a fresh take on the well - known Harry Potter story. By changing his family situation through adoption, it can completely shift the dynamics of the story.