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.
Well, perhaps Harry Potter, instead of growing up with the Dursleys, is adopted by Saitama. Saitama might teach Harry some of his simple yet effective fighting techniques. Harry could then use these in the wizarding world, adding a whole new dimension to his battles against dark wizards. Maybe he'd also introduce Saitama to the magical world, and Saitama would be super nonchalant about all the magic around him.
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.
Obviously, Harry Potter and Sirius Black are the main characters. Harry is the young wizard who has lost his parents and now is adopted by Sirius. Sirius, on the other hand, is Harry's godfather who takes on the role of his adoptive father. There may also be other characters like Hermione and Ron who could still be Harry's friends and play important roles in the story, providing support and getting involved in their adventures.
Obviously, Harry Potter himself would be a main character. Then, there would probably be members of the Potter family, like his adoptive parents. Also, characters like Dumbledore might still play important roles as he often has a hand in Harry's life.
Obviously, Harry Potter himself is a main character. And then there would be the Daedra who adopt him. Depending on which Daedra are involved, they would each have their own personalities and motives. For example, if it's a powerful and manipulative Daedra, it could be a major source of conflict for Harry.
Obviously Gibbs himself would be a main character interacting with Harry. He'd be like a father figure.
Obviously, Harry Potter is one of the main characters. He is the one being adopted into the Greengrass family. Then, the Greengrass family members are important. There are likely to be the parents of the Greengrass family, and the Greengrass sisters. We might see Astoria Greengrass and her sister (if she has one in the fanfic). These characters will play significant roles in Harry's new life and the development of the story.
Obviously, Harry would interact a great deal with Newt. But also, they might run into other characters like Hagrid. Hagrid, being the Keeper of Keys and Grounds at Hogwarts and having a great love for magical creatures, would be interested in what Newt and Harry are up to. They could also meet some of Newt's old friends from his adventures in the Fantastic Beasts series.
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.
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.