A possible plot could also be Harry's relationship with his friends in this new context. They might be initially scared or confused by his new identity. However, through their friendship, they come to accept and support him. Hermione could use her vast knowledge to help Harry understand his powers better, while Ron could provide the emotional support and loyalty that he always has.
One possible plot could be that the son is lost in a strange dimension that combines elements of the Harry Potter world and Loki's world. Harry Potter and Loki have to team up to find him. Along the way, they face various challenges like magical creatures from the Potterverse and Loki's enemies. The son, when found, might have developed some unique powers that are crucial for saving both their worlds.
A common plot in such fanfictions is the idea that death has a plan for Harry that goes beyond what Dumbledore or anyone else expected. It could be that death wants to use Harry to balance the magical world in a different way. So, Harry might be led to discover ancient magic that is related to life and death, and he has to decide how to use it. This could involve making alliances with creatures that are associated with death, like thestrals or dementors in a different context.
Obviously, Harry Potter is the main character as it's about him being the 'Son of Death'. His friends Hermione and Ron are likely to be important characters as well. They always play significant roles in Harry's life. Dumbledore might also be a key character, perhaps guiding Harry in understanding his new identity.
One interesting plot could be the different ways characters' deaths impact the wizarding world's power balance. For example, if a key member of the Order of the Phoenix died, it might lead to a shift in the fight against Voldemort.
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, 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.
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.
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.
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.
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.