Well, in the world of fanfiction, anything can happen. Regarding Percy Jackson dying in Blood of Olympus fanfiction, there are many fanfictions out there with all kinds of scenarios. Some writers might kill off Percy to explore themes like sacrifice, the impact on other characters, or to create a really dark and dramatic storyline. However, the original series doesn't have this happen, so it's all about the creativity of the fanfic authors.
One possible reason could be to create a tragic story. Writers might want to show how the world of the story would be affected by the loss of such a central character like Percy.
One idea could be exploring the relationships between the demigods in more depth. For example, how Percy and Annabeth's relationship evolves after the events of 'Blood of Olympus'. Another could be creating a new adventure for the demigods that involves a forgotten prophecy. Maybe they have to travel to a new, unknown part of the mythological world to fulfill it.
Percy Jackson and Annabeth Chase are definitely popular choices. Their relationship and their individual heroics are well - loved by fans. Another popular character is Nico di Angelo. His dark and mysterious nature makes for great fanfiction material.
Well, you could write a fanfiction where a minor character from the original 'Percy Jackson and the Blood of Olympus' gets their own story arc. Maybe a character who was always in the background but had a lot of potential. For instance, a demigod who discovers a new power related to the blood of Olympus that was previously unknown. They could then go on a journey to master this power and in the process, uncover secrets about the Olympians that were long forgotten.
It's not likely that the actual Olympus (in the context of the Percy Jackson series being a place of the gods) reads fanfiction. Fanfiction is a creation of the fans in our world, and there's no indication in the books that the gods or Olympus as an entity would engage with it.
Nico di Angelo is often overlooked compared to Percy. He has such a rich backstory with his connection to the Underworld and his struggle with his identity. Fanfiction could explore more of his inner thoughts and his relationships, especially his friendship with Percy on a deeper level.
A lesser - known but really interesting fanfiction is 'Annabeth's Quest for Wisdom'. This story follows Annabeth as she goes on a solo quest to gain more knowledge and wisdom. It shows a different side of her character, her determination and her thirst for knowledge in a very engaging way.
One great fanfiction is 'The New Quest of Percy Jackson'. It continues Percy's adventures in a very believable way, with new challenges and old friends by his side. The author really captures the essence of the original series.
Annabeth could definitely be one of his main allies. Her intelligence and strategic planning would be invaluable in a fight against Olympus. Also, Grover might be there, using his skills as a satyr to gather information and support from other nature - related beings. Some of the less - well - known demigods from Camp Half - Blood could also join in, seeing Percy as a chance for a new order.