Merlin is a must - have main character. He brings his magic and his wisdom from his own story. The Dragon Prince is there as well, representing his own world and its magic. There could also be side characters like the sorcerers or warriors from either of the two original stories. They can help build the world of the fanfic, add conflict, or provide support to the main characters as the story unfolds.
Obviously, Merlin is the main character. As a prince, he has a central role in the story. Arthur is also often a major character. Their relationship changes and develops in different ways. For example, Arthur may have to deal with Merlin being his equal in status now. Gwen might also be an important character, perhaps as Merlin's ally or love interest.
Well, obviously Merlin and the prince are the main characters. Merlin is often depicted as a powerful wizard with a kind heart, and the prince can vary in personality depending on how the author writes him. Sometimes he's brave and headstrong, other times more cautious and diplomatic.
Merlin is obviously one of the main characters. Arthur is also likely to be a major part as Merlin's relationship with him in Camelot is a big aspect. Then there could be new characters introduced, like Merlin's long - lost family members, perhaps a father or a sister who are also important in the story.
It could be Morgana. She might see Merlin's transformation into a dragon as a threat to her own power and plans. So, she tries to stop him from fully becoming a dragon or tries to use his new form for her own evil purposes.
One popular fanfic might be those that focus on the relationship between Merlin and the Dragon. For example, stories where the Dragon reveals more ancient magic secrets to Merlin. Another could be ones that explore what would happen if Merlin had more direct influence on the Dragon Prince's upbringing. There are also fanfics that might create new adventures for Merlin within the Dragon Prince's world, perhaps teaming up with the Dragon Prince to fight a new, powerful enemy.
Often, we also see new characters being introduced. For example, a young sorcerer who Merlin takes under his wing. This new character can act as a sort of foil to Merlin, showing how much he has grown and changed. And sometimes, we might see the return of Morgana in a different form, either as a spirit guiding Merlin or as an enemy he has to face one last time. It all depends on the direction the fanfic author wants to take.
Typically, there is a young protagonist in the 'dragon prince novel'. There might also be a wise old dragon or a powerful mage as important characters.
The dragon prince himself is surely a main character. There may also be some human characters like a brave knight or a cunning wizard who cross paths with the dragon prince. And perhaps some elf characters as well, who might have their own agendas and play important roles in the story.
Well, clearly Merlin and Harry Potter are the main characters. Merlin, with his powerful magic and wisdom from a different era, and Harry, the boy - who - lived from the modern wizarding world.
Well, Harry Potter would be the main character of course, given that he is the 'Son of Merlin' in this fanfic. His friends Ron and Hermione are likely to be important characters too, as they are always by his side in the original series and would probably play significant roles here as well.