Who are the best characters to include in a Merlin and Harry Potter fanfic?

Well, Sirius Black could be an interesting character to put in a 'Harry Potter Dursleys fanfic'. Since he was Harry's godfather, his presence could stir things up for the Dursleys. He might be furious at how they treated Harry and take some sort of action. Hermione and Ron could also be included. They could visit Harry at the Dursleys' and be shocked at the living conditions. Their reactions and how they interact with the Dursleys could make for an exciting plot. And of course, the Weasley family as a whole. Their warm and loving nature would contrast greatly with the cold Dursleys.

Obviously, Harry Potter and Nicolas Flamel are essential. But also including characters like Hermione Granger would be great. Hermione's thirst for knowledge would make her a perfect student of Flamel's teachings.

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.

Ron can also be included. He might be a bit clueless at first about their relationship, but then he can become a source of comic relief as he tries to play matchmaker or accidentally gets in the way of their romantic moments.

One great 'Merlin and Harry Potter' crossover fanfic is 'The Merlin Effect in Hogwarts'. It combines the magic systems of both universes really well. The characters from Merlin, like Merlin himself, fit surprisingly well into the Hogwarts setting. They interact with Harry and his friends in interesting ways, for example, Merlin uses his unique magic to solve some of the problems at Hogwarts that the students there are facing. It's a fun read for fans of both series.

Akeno Himejima could also be a great addition. Her dual nature of being sweet but also having a darker side would create an interesting dynamic with Harry. They could have some really engaging conversations about power and morality.

Another interesting pairing could be with Dumbledore. Fem Merlin could offer a different perspective on magic to Dumbledore, and they could work together to protect Hogwarts and the wizarding world. Their combined wisdom and magic could be a formidable force against any dark forces in the fanfiction.

Obviously, the main characters would be Merlin, Harry Potter, and probably the founders would be mentioned or play some role in the background. After all, Merlin is from their era.

Obviously, Harry and Gabrielle themselves are essential. But characters like Hermione can add a lot too. She could be the one to help Gabrielle with her studies when she visits Hogwarts. Ron can also be there for some comic relief and to show the difference between the Hogwarts and Beauxbatons students.