The Titans might not be completely defeated. Some of their followers could be plotting against Percy. They think that by getting rid of him, they can start a new uprising against the gods. So, they leave him in a dangerous situation where they believe he will surely die.
Perhaps Percy is left for dead in a magical trap set by an old enemy. As he tries to escape, he befriends a strange creature that he initially thought was an enemy but turns out to be a key to his survival. He has to rely on his wits and newfound friendship to get out and seek revenge on those who left him.
In some fanfictions, Percy Jackson might be depicted as dying in Tartarus. However, this is a departure from the original series. Fanfiction writers often take creative liberties, and some may choose to create such a tragic scenario for shock value or to explore different themes like sacrifice and the finality of death in a harsh, mythological setting.
The 'bed, wed or dead' aspect makes it unique. It forces the author to think about different relationship statuses for the characters in a more structured yet creative way. While other fanfictions might focus on just one type of relationship or adventure, this one combines three very different relationship scenarios. It also allows for a wider range of emotions and plot twists. For example, a character being in the 'dead' scenario can lead to a story of resurrection or revenge, which is different from the typical Percy Jackson fanfiction that might focus more on quests.
One possibility could be that Percy returns with new powers. Maybe he has some connection to the Underworld now that he's come back from the dead. He might be able to control the dead or has some knowledge about the afterlife that he uses to help his friends in battles against new and more powerful enemies.
Percy is surely one of the main characters, as the story is centered around him being left for dead. There might also be the people who left him, though we don't know who they are yet. Maybe there will be a character who discovers Percy and helps him, like a kind - hearted stranger.
Well, one possibility is that he has to find a way to survive on his own. He might encounter new and even more terrifying monsters in Tartarus. Maybe he'll discover some long - lost secrets about the place that could be used to his advantage or that could change the whole understanding of the demigod world if he ever gets out.
One interesting concept could be the unique pairings of characters in the 'bed, wed or dead' scenarios. For example, if it involves Percy, different pairings with other demigods or even mythological creatures can lead to really engaging stories. Maybe a pairing with Annabeth in the 'wed' scenario could explore how their relationship progresses further in a different way than in the original series. Another concept could be the challenges they face in the 'bed' or 'dead' situations. If a character is in a 'dead' situation, it might show how the others react and try to bring them back, which can add a lot of drama and emotion to the fanfiction.