One common plot might be about Harry's relationship with his unknown parentage related to 'G'. It could lead to him finding a whole new family or group of allies. For example, he might discover that there are other powerful wizards related to 'G' who have been waiting for him to come of age to reveal certain secrets about the wizarding world that could change everything.
Well, in some of these fanfictions, there could be a plot where Harry discovers new magical abilities passed down from this 'G' figure. Maybe he can control a unique type of magic that no one else in the wizarding world has ever seen. This new ability might put him in a position where he has to face new enemies or challenges.
One interesting plot could be Harry discovering new and unique magical abilities that are not part of the original series. For example, he might be able to communicate with magical creatures in a more profound way. Another plot could involve Harry having a different family background that changes his relationships with other characters. Maybe he has a long - lost relative who is a powerful wizard from a far - off land, and this relative comes to Hogwarts to teach him some ancient magic. A third plot could be Harry being involved in a time - travel adventure within the wizarding world, where he has to fix some past mistakes that are affecting the present state of magic.
Well, one interesting plot could be Harry's struggle with his new identity as the son of Fenrir. He might have to deal with the stigma associated with Fenrir being a werewolf. Another plot could involve his relationships with other characters changing. For example, some friends might be afraid of him, while he tries to prove he's not like his father.
Perhaps a plot where Harry, as the son of Malfoy, discovers a hidden prophecy that links him to the downfall of Voldemort in a completely different way than in the original series. This could involve him using his knowledge of the Malfoy family secrets and connections to gain an advantage over the Dark Lord.
Well, in some plots, Harry might have special powers related to the moon. Maybe he can communicate with lunar spirits or use moonlight for magic in ways not seen in the original books. For example, he could use the moon's energy to enhance his Patronus charm, making it even more powerful against Dementors.
One possible plot is that Harry, as the son of Nyx, has to face off against a new enemy that is specifically targeting him because of his connection to Nyx. This enemy could be an ancient being that has a vendetta against Nyx and sees Harry as a way to get revenge. Along the way, Harry would have to learn more about his mother's (Nyx) powers and how to use them effectively, all while still dealing with the normal Hogwarts stuff like classes and friendships.
A possible plot is that Harry, being the son of Hermes, is hunted by dark forces who fear his potential. They think that his connection to Hermes gives him an edge in fighting against them. So, Harry has to constantly be on the run, while also trying to figure out how to use his Hermes - given powers to his advantage. He might have to learn how to use stealth and misdirection, which are traits associated with Hermes, to outwit his pursuers.
In some fanfictions, there could be a plot where Harry, as the son of Hestia, has to face opposition from traditional wizarding families who don't accept this new 'parentage'. This would lead to him having to prove himself not only as a powerful wizard but also as a worthy heir to Hestia's legacy. He might have to use his wits and newfound powers to overcome these prejudices.
Well, one interesting plot could be the internal struggle of the son. He might be torn between the dark heritage from the Dark Lord and the good influence of Harry Potter's world. Maybe he has to hide his true identity while trying to figure out his own moral compass.
Well, a possible plot is that Harry discovers his true parentage in a very dramatic way. He could be in the middle of a battle or a difficult situation at Hogwarts and suddenly realize that Snape and Bellatrix are his parents. This would completely change his perception of himself and his place in the wizarding world. He might then have to deal with the consequences of this revelation, such as how the Order of the Phoenix and the Death Eaters view him.
One interesting plot could be Harry growing up in the Malfoy Manor and having to deal with the pure - blood ideology from a different perspective. He might struggle between his own sense of right and wrong and the values imposed on him by the Malfoy family.