A third idea is a mortal's perspective on the demigod world. The mortal could be a journalist or a writer who is trying to document the strange happenings around them that they suspect are related to the demigod world. They might interview some demigods who are willing to share their stories on the condition of anonymity, and the mortal has to decide whether to expose the truth or keep it hidden to protect the demigods.
Another interesting one - shot could be about a mortal who discovers the existence of demigods through a series of strange events. Maybe they start seeing things that others don't, like strange creatures in the shadows. As they dig deeper, they form an unlikely friendship with a demigod who tries to keep them safe while also keeping the demigod world a secret from them as much as possible.
Well, perhaps Percy gets involved in a mystery in the mortal world that seems normal at first but is actually related to the Greek gods in some way. For example, an ancient artifact shows up in a local museum and strange things start to happen around it. Percy has to figure out how to stop the chaos it's causing without getting the attention of the mortal authorities. He might also have to team up with some new mortal friends who have a knack for getting into trouble.
One idea could be a fanfiction where Percy and his friends go on a new quest in a modern, urban setting. Instead of the usual mythological locations, they have to deal with monsters hiding in big cities. Another idea is a story that focuses on the relationships between the characters in a more in - depth way, like exploring the friendship between Percy and Grover during their off - quest times. And a third idea could be a time - travel fanfiction, where Percy gets sent back to the time of the ancient Greek heroes and has to interact with them while still holding onto his modern values.
One idea could be to explore Percy's life after he has fully mastered his powers. Maybe he goes on a quest to find a long - lost relative who also has demigod powers. Another could be a story where Percy and his friends have to deal with a new type of monster that is immune to their usual weapons and they have to find a creative way to defeat it.
I really like the one - shot 'Percy's Dream'. It delves into Percy's mind and his dreams, which are often filled with prophecies and memories of his past adventures. The way the author describes the hazy, dream - like state and how Percy tries to make sense of it all is very engaging.
First, you should familiarize yourself with the Percy Jackson universe. Read the books, watch any related movies or shows. This will give you a good understanding of the world, the characters, and the rules. Then, think about your mortal character. Decide who they are, what their personality is like, and how they might interact with the demigod world.
In 'Percy Jackson is a mortal fanfiction', perhaps an interesting concept is how Percy's mortal life affects his view of the demigod world. He might start to question the fairness of the demigod existence now that he's on the outside looking in. Also, the fanfiction could explore how Percy's mortal family reacts to his newfound mortality. Do they notice a change in him? And how does he explain his past adventures without revealing the truth of the demigod world?
One plot idea could be Percy having to team up with Hera to rescue a group of demigods who have been captured by an ancient monster. Hera, despite her usual aloofness, realizes she needs Percy's unique skills.
One idea could be a crossover with the Harry Potter universe. Percy could visit Hogwarts and have to deal with both magical and mythological threats. Maybe he'd team up with Harry to defeat a common enemy that combines dark magic and ancient Greek monsters.
Well, you could write a fanfiction where Percy loses his memory and has to rediscover his powers and his place among the demigods. Or perhaps a story about how the minor gods in the Percy Jackson universe form their own alliance because they feel overlooked by the Olympians. You could also create a fanfic that focuses on Annabeth's journey if she was separated from Percy and had to fend for herself in a dangerous situation.
Another interesting concept is a story where Percy Jackson is somehow transported to the Marvel universe. He could use his water - controlling powers in unique ways there. Maybe he'd join forces with Namor, the Sub - Mariner, and they'd have an underwater adventure together, facing off against some underwater threat that only their combined powers could handle.