Well, Dumbledore could still play a significant role. Even though Harry is now a mage in a different context, Dumbledore's wisdom and guidance could be crucial. Neville might also be important, having grown into a strong wizard himself and partnering with Harry in various mage - related tasks. Additionally, there could be an antagonist, a dark mage who opposes Harry and tries to undermine his newfound powers.
Hermione could be important. She might help Harry in his journey as a mage, using her intelligence to research and understand new magical concepts that Harry discovers. Ron could also be there, providing his loyalty and friendship, perhaps even joining Harry in some of his mage - related adventures. And then there could be a new character, a powerful mage who becomes Harry's mentor and teaches him the deeper secrets of magic.
There could be a local wizard who becomes Harry's mentor in a way. Since Harry is on his own, he might seek guidance from someone outside of his usual circle, like an old hermit - like wizard who has a lot of knowledge about the more hidden parts of the wizarding world.
Besides Harry, there could be a character who is a descendant of an ancient elemental magic family. This character might initially be a rival to Harry in mastering the magic but later becomes an ally. Also, Dumbledore could play an important role. He might be secretly guiding Harry in his journey of learning elemental magic, using his own deep knowledge of the wizarding world's secrets.
Hermione would probably be involved. She could help Harry research about the island, like its history and any magical properties it might have.
Hermione could be important. She might be the one who encourages Harry to drop his mask, or she could be the first to notice the change when he does. Another could be Ron, as Harry's best friend, his reaction to Harry dropping his mask would be significant.
There could be a doll collector named Alice. She might be Harry's friend or rival, always competing to get the best dolls in the story.
Hermione could be a main character. She might be the one who helps Harry understand and control his gorgon powers. For example, she could research in the library to find ancient spells or potions that can suppress the gorgon - like effects when they are unwanted.
There might also be a love interest for Harry. This character could be someone who is also involved in the dangerous world of assassination in some way. She or he might be a fellow assassin or someone who is on the periphery of that world but still gets drawn into Harry's life, adding a romantic sub - plot to the story.
Ron could also be there. He might be a bit jealous at first if Harry's adopted family is wealthier or has more influence in the wizarding world. But later, he would support Harry as always.
There could be the mafia boss. He might be a tough and shrewd character who takes Harry under his wing at first but later becomes suspicious of Harry's actions. Another main character could be Harry's best friend in the mafia. They go through all the dangerous and exciting adventures together, and this friend might have different views on the mafia life compared to Harry.
There's Irvin Irving. He's a high - ranking official in the police department. His actions and decisions often have an impact on Bosch's investigations, sometimes creating obstacles and other times being helpful in an unexpected way. Another character is Eleanor Wish. She has a complex relationship with Bosch, and her presence in some of the stories adds an emotional and plot - driving element.