Well, of course, the heir of Morgana is likely to be a main character. They would be the focus as they navigate their new identity and the powers that come with it.
In some cases, there might be new original characters created specifically for the fanfiction. These could be characters who have a connection to the ancient magic of Merlin and Morgana. For example, a mysterious wizard who has been guarding an artifact related to their power. They could initially be an enigma to Harry and his friends, but as the story progresses, they become an important part of the plot, either as an ally or an adversary.
One main plot point could be Harry's discovery of his relation to Morgana. This would likely send him on a journey of self - discovery, trying to figure out what it means to be her heir. Another could be how the wizarding world reacts to this revelation. Some might fear him, while others might see him as a potential savior or a powerful ally.
Hermione would likely still be a main character. She could be the one helping Harry research about Morgana and his heritage. Ron might also be there, providing support and a bit of comic relief as Harry goes through this identity crisis. Dumbledore could also play a major role, guiding Harry on how to handle his newfound identity and the potential implications it has for the wizarding world.
There could be other characters from the original Harry Potter series who play important roles. For example, Hermione might be there to help Harry research and understand his Pendragon heritage. Ron could also be by his side, providing support and comic relief in the face of all the new and strange things that come with this discovery.
In this fanfiction, Harry Potter is probably the central figure as it seems related to his new identity as the Heir of Death. However, other characters like Dumbledore could play significant roles. Dumbledore might be guiding Harry through this new discovery, or perhaps he's been hiding some secrets about the Heir of Death all along. Additionally, we may see characters from the dark side, like Voldemort or his followers, being involved in the story, either trying to stop the heir or use their power for evil.
In this fanfiction, the main characters could be quite diverse. Since it's about a 'dark heir', there would likely be a character who embodies this role. It could be a previously unheard - of character with a complex backstory related to a dark legacy. Harry Potter might be involved to oppose this dark heir or to try and understand their motives. His friends, like Hermione and Ron, could also be part of the story. Additionally, there could be other magical beings or characters from the 'Harry Potter' lore, such as members of the Order of the Phoenix or Death Eaters, who are drawn into the plot due to the emergence of the dark heir.
The heir themselves would be a main character, of course. And Harry Potter might still play a role, either as a friend or a rival to the heir. Dumbledore could also be a major character, guiding or observing the heir's journey.
Typically, the main character would be the heir of Avalon. They are often a new character inserted into the Harry Potter universe. But of course, Harry Potter, Hermione, and Ron usually also play important roles as they interact with the heir of Avalon, either as friends, allies, or sometimes even as rivals.
Well, surely Harry Potter would be one of the main characters. Since it's in the title that he's the heir of Uchiha, he's bound to be central to the story. And there might be characters from the Uchiha clan as well, like Sasuke or Itachi. They could play important roles in helping Harry understand his new connection to the Uchiha. Also, we can't forget his friends from Hogwarts like Ron and Hermione. They would probably be involved too, either helping Harry deal with this new situation or being a bit confused by it.
The main character is the 'Heir of Darkness', who has a complex personality and backstory. Harry Potter would be a main character as he is often at the center of any major events in the Harry Potter universe. Additionally, there could be antagonists in the fanfiction related to the dark side that the heir might be associated with. For example, a group of dark wizards who want to use the heir for their own evil purposes. And the fanfiction might also introduce some minor characters from the original series in new roles, like Luna Lovegood providing some unique insights about the heir's situation.