One possible plot could be that Harry's connection to Calypso is a secret at first. As he grows up in the wizarding world, he starts to notice strange things about himself that can't be explained by normal wizarding abilities. Eventually, he discovers his true mother is Calypso. This could lead to a whole new set of adventures as he tries to learn more about his mother's world and how it ties into the wizarding world he already knows. He might even face opposition from those in the wizarding world who fear the unknown power he could possess from his Calypso heritage.
One possible plot could be that Calypso, with her magical abilities, imparts a different kind of magic knowledge to Harry. Maybe she teaches him more nature - based magic, which is different from what he would learn at Hogwarts. Harry might grow up in a more isolated and peaceful environment with Calypso, away from the prying eyes of the wizarding world in Britain. This could lead to him having a different perspective on magic and his role in the fight against Voldemort.
Well, it's very likely that there is a 'Harry Potter is the son of Calypso' fanfiction out there. Fanfiction allows for all kinds of wild crossovers and reimaginings of characters. Some writers might be inspired by the magic in both the Harry Potter universe and the Greek mythology that Calypso comes from. They could combine the two in an interesting way to create a story where Harry Potter is Calypso's son. But it might take some time to actually find it as there are thousands of fanfictions out there.
Well, one possibility could be that Harry has some sort of angelic powers inherited from Castiel. He might use these powers to fight Voldemort in ways that are different from the original story. For example, he could heal the injured more effectively during the battles.
Well, perhaps the plot could involve Harry discovering his Titan heritage and having to deal with new powers. He might struggle to balance his wizarding world life with this new Titan side. Maybe he has to face enemies that are both from the wizarding world and related to his Titan lineage.
Well, one possibility could be that Harry discovers his true parentage as Sauron's son in a very shocking way. Maybe through some dark magic revelation. Then he might struggle with his identity, being a part of the wizarding world that he loves but also having this dark connection. He could face a lot of inner turmoil as he tries to decide whether to embrace his dark heritage or fight against it.
In this fanfiction, perhaps Harry's identity as the Joker's son makes him an outcast in the wizarding world. The story could revolve around him trying to prove that he's not just a product of his 'father's' evil. He could use his Joker - like cunning and unpredictability to outwit his enemies in Hogwarts, who might be prejudiced against him due to his strange heritage.
Well, it could be about Harry having the chaotic and unpredictable nature of the Joker as his 'father' in this fanfic world. Maybe he uses some of the Joker's unorthodox tactics in the wizarding world, causing a stir among the witches and wizards. He might have a very different approach to dealing with Voldemort compared to the original story.
In this fanfiction, the plot could be that Harry discovers his true parentage as the son of Dionysus later in his Hogwarts years. This revelation could send shockwaves through the wizarding community. His relationship with his friends, like Ron and Hermione, could be tested as they try to understand this new aspect of Harry. He may also be drawn into a mystery related to the ancient Greek magic that his father represents, and he has to travel to different places, both in the wizarding world and perhaps even to the remnants of the ancient Greek magical sites, to uncover the truth about his powers and his role in the grand scheme of things.
Well, perhaps Harry could inherit some of Hercules' super strength. He might use it to fight Voldemort in a more physical way, like being able to lift and throw large objects at the Death Eaters. It could also add an interesting dynamic to his relationship with his friends, as they might be both in awe and a bit intimidated by his newfound power.
One possible plot could be that Harry discovers his connection to Nightwing in a mysterious way. Maybe he starts having strange dreams or finds an old artifact that reveals the truth. Then he has to learn to balance his wizarding world life with this newfound heritage related to Nightwing, which could bring in new powers and a whole new set of challenges.