Percy is the main character. There could be a powerful and mysterious mage who serves as a sort of antagonist at first. This mage tests Percy's skills and knowledge of magic. But as the story progresses, they might end up having a more complex relationship, like a reluctant alliance when they face a common, greater threat.
Obviously, Harry Potter is the main character as the title implies he is the one learning magic early. But there could also be Hermione and Ron. Hermione might be intrigued by Harry's newfound knowledge and Ron could be both a bit jealous and in awe of Harry's early magical abilities.
Maybe an ancient god or goddess who has been forgotten by most but still holds great power in magic. This deity could see potential in Percy and choose to teach him magic as a way to bring back some balance in the world. It could be a goddess of magic who was once a part of the pantheon but has since been overshadowed.
Obviously, Harry Potter is one of the main characters as it's about him learning magic. He is the central figure around which the story revolves.
Obviously, Harry Potter is a main character as the title suggests. He is the one who is on the journey of learning wandless magic. Hermione Granger could also be an important character. She might be helping Harry research about wandless magic, using her vast knowledge from the library.
Obviously, Harry would be one of the main characters. Since it's about him learning family magic.
Obviously, Harry Potter himself is a very important character as the story revolves around him learning family magic. His friends like Hermione and Ron might also be important as they could support or help him in his journey of learning this magic.
Well, perhaps Percy discovers a hidden magic within himself that he didn't know he had. Maybe he starts off struggling with basic spells and then gradually masters more complex ones. For example, he could be trying to make objects levitate at first and later on be able to conjure powerful shields.
Well, maybe Percy stumbles upon a hidden magical realm where he meets an old wizard who decides to teach him magic. He could learn spells to control water in new and extraordinary ways, like turning it into different shapes or using it to communicate over long distances.
A powerful dark wizard could be the main antagonist. This wizard might see Peter's newfound magical abilities as a threat to his own power and plan to either steal Peter's magic or destroy him. He could be someone who has been ruling the magical underworld in New York and doesn't want an upstart like Peter to disrupt his rule.
Obviously Naruto is one of the main characters since it's about him learning the truth. Sasuke could also be a main character as Naruto's relationship with Sasuke is often intertwined with the truth he's about to discover. Kakashi might be involved too, as he has a lot of knowledge about the past and could be the one to guide Naruto in his search for the truth.