One popular 'percy thrown in tartarus fanfiction' is 'Into the Abyss'. It really delves into Percy's struggles and his attempts to survive in Tartarus. The author does a great job of describing the terrifying environment.
There's a really good one where Percy is thrown into Tartarus and has to team up with some unexpected allies. It shows his growth and resourcefulness in such a harsh place. I can't recall the exact title though. But it has some intense battle scenes and great character development for Percy.
One possible plotline could be Percy's struggle for survival in Tartarus. He might have to face off against various terrifying monsters. Another could be his journey to find a way out while dealing with the psychological trauma of being in such a hellish place. And perhaps he discovers some long - hidden secrets about Tartarus itself during his time there.
Survival is a big one. Tartarus is a very hostile place, so Percy has to fight to stay alive. Another theme is redemption in some cases, like if he feels responsible for getting thrown in there.
His friends like Annabeth or Grover could be the ones to rescue him. They might discover a way into Tartarus and brave all the dangers to get to Percy.
A third plotline could be Percy's search for a powerful artifact or knowledge in Tartarus that could help him in his future battles or save his friends. Along the way, he discovers secrets about the origin of the gods or the true nature of Tartarus itself, which changes his understanding of the world he thought he knew.
The Titans that were banished to Tartarus could be major antagonists. They might see Percy as an intruder and a threat, and try to stop him from escaping or even try to use him for their own purposes. Also, the various monstrous creatures native to Tartarus, like the Empousai or the Arai, could constantly be attacking Percy.
One possible plot could be Percy's struggle to survive in Tartarus. He might have to face the various terrifying monsters there, like the giants or the powerful demons. Maybe he'd find some unexpected allies among the damned souls, and together they'd try to find a way out.
The Titans or Giants that were banished to Tartarus could be the main antagonists. They might see Percy as a threat or an opportunity to escape and seek revenge on the Olympians.
One great Percy post - Tartarus fanfiction is 'A New Beginning' which focuses on Percy's struggle to regain a sense of normalcy. It shows his journey of dealing with the trauma while still being a hero. Another one is 'Rebuilding Bonds' where he tries to reconnect with his friends and family in a more profound way after Tartarus.
One great 'Percy jumps into Tartarus' fanfiction is 'Into the Abyss'. It really delves deep into Percy's psyche as he faces the terrors of Tartarus. The author does an amazing job of describing the dark and desolate landscape, and how Percy has to use his wits and powers to survive.
One popular 'Percy is the son of Tartarus' fanfiction might be 'The Dark Legacy of Percy'. In this fic, Percy has to deal with the stigma of his parentage while also facing new and powerful enemies. It delves deep into how the other characters in the Percy Jackson universe react to this new revelation about Percy.