There are numerous interesting plot ideas for Percy and Medusa fanfiction. For example, a plot could revolve around Medusa having a prophecy about Percy and she tries to either prevent or fulfill it. Another idea is that Percy discovers a hidden side of Medusa that no one else knows about, like a secret power or a kind heart beneath her monstrous exterior. It could also be a story where they are both outsiders in a world that doesn't understand them, and they form an unlikely bond. Maybe Medusa has the key to a mystery that Percy is trying to solve, and they embark on a journey together to uncover the truth.
A really interesting plot might be if Medusa's curse was broken, and she has to learn to live in the modern world with Percy's help. Or perhaps a story where Percy accidentally gets turned into a stone - like creature similar to Medusa's victims, and she has to figure out how to reverse it. There could also be a plot where they are both trapped in a magical realm, and they have to rely on each other's unique abilities to escape.
One idea could be a time - travel plot where Percy goes back in time and meets a younger, different Medusa before she was turned into a monster. Another could be a story where Medusa somehow gets a chance at redemption and Percy has to decide whether to trust her or not. Maybe a plot where they have to team up to defeat a greater evil that threatens both of them.
One idea could be Percy has to face Medusa again, but this time she has an army of stone minions. Another could be that Medusa was actually cursed by a more powerful god and Percy has to find a way to break it. Maybe Percy discovers Medusa has a long - lost relative who is being held hostage and he has to make a deal with her.
One idea could be Percy having to hide his true parentage from the other demigods at Camp Half - Blood. He's constantly worried about being shunned or attacked if they find out. Another could be Percy using some of Medusa's powers in a unique way, like being able to turn enemies to stone briefly but with some unforeseen consequences. Maybe he has to go on a quest to find a way to control these new powers.
One idea could be that Percy has to face a new threat from Medusa's long - lost sister who has even more powerful petrifying abilities. He has to use his skills and some newfound knowledge about the Gorgon lineage to defeat her.
In a fanfic, perhaps Percy and his friends accidentally stumble upon Medusa's lair while on a quest. But instead of immediately attacking, Medusa offers them a deal. She says she will give them a valuable clue to complete their quest if they help her get revenge on one of the minor gods who wronged her in the past. Percy and his friends then have to decide whether to trust Medusa or not.
One idea could be Percy having to face Medusa in a new way that challenges his usual methods. Maybe he gets trapped in a dream where Medusa has the upper hand and he has to use his wits more than his sword. Another could be a scenario where Medusa is somehow redeemed and teams up with Percy against a greater evil. For example, an ancient monster that threatens both the mortal and mythological worlds.
One idea could be Percy using his water powers in a unique way against Medusa. For example, he could create a water shield that reflects Medusa's petrifying gaze back at her in a fanfiction. Another could be a scenario where Medusa, instead of being an enemy, teams up with Percy to face a greater threat.
Another interesting plot could be that an enemy uses a powerful spell to make Medusa forget her love for Black Bolt. Black Bolt then has to find a way to break the spell. Along the way, he might have to face challenges alone that he would usually face with Medusa by his side. This would show his growth as a character and his determination to get her back.
A possible plot could be that Medusa somehow gets transported to Spider - Man's New York City. Spider - Man at first is cautious of her, but then realizes she is not there to cause harm. Together, they try to find a way to send her back to her own place while also dealing with local criminals who are trying to steal her powers. They could also have some comical moments where Spider - Man has to avoid looking directly at Medusa.
A post - apocalyptic Inhumans setting where Medusa and Black Bolt have to fight to protect the remaining Inhumans. They could face new threats and challenges that test their relationship and leadership skills in a whole new way.
One idea could be that Danny Phantom accidentally enters Medusa's lair while on a mission in the Ghost Zone. Medusa, being intrigued by this half - ghost, half - human, decides to use his unique abilities for her own gain. Another plot could be a crossover where Danny has to team up with Medusa to fight a common enemy that threatens both the human world and Medusa's domain. Or perhaps Medusa gets ahold of Danny's ghost powers and goes on a rampage in the human world, and Danny has to figure out how to stop her without destroying her.