Who are the potential characters in 'Harry Potter Son of the Demon King' fanfiction?

For the Atlantis side, there could be Atlantean royalty, like a princess or a group of elders. There might also be Atlantean mages or warriors. And don't forget about the mer - people. They could play a role, either as allies or antagonists. Maybe there's a mermaid who falls in love with Harry and helps him understand the ways of Atlantis.

Hermione would definitely be there. She would be intrigued by Harry's new heritage and would probably try to research all about Ra in the Hogwarts library. Ron too, would be by Harry's side, though he might be a bit more skeptical at first about this whole Ra business.

Obviously, Harry Potter himself as the Ice King. Then there would be Draco Malfoy. He could be either a rival or an ally to Harry in this new role. Hermione would also be there, trying to understand the magic behind Harry's transformation and helping him control his powers. And of course, Snape, who might have some knowledge about the Slytherin magic related to the Ice King.

Obviously, Harry Potter himself. Then there could be Hermione and Ron, who would be his friends and help him deal with the revelations of his parentage. Dumbledore would also be there, guiding Harry as he tries to understand his connection to Ariel. And perhaps some sea - based characters like mermaids or sea wizards who come to Hogwarts to interact with Harry.

On the Hogwarts side, Hermione and Ron would surely be there. They could be quite bewildered by Harry's newfound connection to Olympus. And Dumbledore, he might have some knowledge about the connection between the two worlds and could guide Harry in some way. From the Olympus side, Athena could also be involved as she is the goddess of wisdom and might see potential in Harry.

Obviously, Harry himself as the son of Atlas. Then there could be the original characters like Dumbledore, who might play a role in guiding Harry about his new identity. Hermione would still be there, probably helping Harry research about Atlas. And Ron, as Harry's friend, would be involved in his adventures.

Obviously, Harry Potter himself. Then there could be the dragons, perhaps an old and wise dragon that acts as Harry's mentor. Hagrid might also play an important role as he has a connection with magical creatures and could help Harry understand his new identity.

There could be some sort of primordial council or group of elders in this fanfic. They would be the ones who have knowledge about the primordials and their descendants. Harry would interact with them, and they could either be his allies or his antagonists. Then there are the regular students at Hogwarts. Some might be jealous of Harry's new powers, while others might be in awe. And we can't forget about the magical creatures, like centaurs or house - elves, who might also have a different view of Harry due to his primordial connection.

Hermione would definitely be one of his allies. She is smart and would be able to help him research about his new identity and how to control his powers. For example, she could find ancient texts in the Hogwarts library that relate to both the wizarding world and the Greek gods.

His friends from Hogwarts could still be his allies. Hermione would use her intelligence to help him understand his new situation. Ron would be there for moral support. Additionally, any friends or allies that Rias has in her world could also become Harry's allies. They might be magical creatures or other powerful mages.