It could be a demigod who was overshadowed by the more well - known ones like Percy. Maybe someone who was born to a minor god or goddess and got lost in the shuffle. For example, a demigod of a nature god who was always in the background while the big battles were fought by the children of the more prominent Olympians.
It could be an old demigod from a long - forgotten camp. Maybe someone who was exiled or lost during a great war in the past. For example, a demigod who had the power to control the weather but was shunned because people feared their power.
It could be a demigod who was once shunned and now wants revenge. This demigod has turned to the dark side and uses their powers in a twisted way to cause chaos among the other demigods. They might target the forgotten demigod specifically because they see them as a symbol of all that is wrong with how demigods are treated.
The main antagonist could be an ancient demigod who was forgotten by history but has now awakened. This demigod could be bitter about being forgotten and decides to take revenge on the current demigod world. He might have some dark and powerful magic that he's been developing during his long slumber.
Percy Jackson is likely to still be one of the main characters. Since it's related to his world, he'd be in the center of the story. Alongside him, there could be new characters representing the forgotten primordial beings. They might be ancient and powerful, with names and abilities that are unique to this fanfiction realm.
A possible plotline could be that Percy is somehow cursed to be a forgotten god. He has to figure out who cursed him and why. In his quest, he may find that there are other forgotten gods and goddesses who are also trying to break free from the same fate. He could team up with them and use his unique skills as Percy Jackson, even in his forgotten state, to fight against the forces that are keeping them in obscurity. This could involve battles with powerful magical entities, exploration of long - lost realms, and the discovery of new powers within himself that are related to his new 'forgotten god' status.
In a 'Percy Jackson, Naruto, The Forgotten God' fanfiction, perhaps the forgotten god has some power that is crucial for both their worlds. Percy Jackson might come from his world where Greek gods exist and Naruto from his ninja - filled land. They are brought together by some prophecy. They start their journey, facing enemies from both their universes who don't want the forgotten god to be found. Along the way, they learn from each other's fighting styles and ways of life.
Well, sometimes in fanfiction, his brother might be a mortal who discovers his demigod heritage later. This could add an interesting twist to the story as he has to adapt to the world of gods and monsters. Or it could be a long - lost half - brother from a different camp, like a son of Poseidon from another part of the world who was hidden away for some reason.
She might be a character created to add a new twist to the story. For example, she could be a demigod with a very rare power that no one has seen before. Ariana could be a key to solving a big mystery in the fanfiction world. She could also be an antagonist at first, but then later become an ally to Percy after some character development.
One idea could be that the forgotten one has a special power that is the key to saving the world from a new, unknown threat. Another could be that they are actually a long - lost relative of Percy's and their connection reveals hidden secrets about the demigod world. Maybe the forgotten one was sent away on purpose by an enemy long ago and now they're back for revenge.
He might meet some native Alaskan spirits. These spirits could be like the nature spirits he has encountered before but with their own unique Alaskan characteristics.