It can be considered common. There are a large number of PJO fans out there, and fanfiction is a popular medium in fan communities. Since the official books have a set storyline, fanfiction offers a chance to expand on it, so many 'mortals' (fans) are attracted to it.
No. Romans lived in ancient times and fanfiction is a modern concept. There was no such thing as fanfiction during the Roman era, so they couldn't have read it.
Sure. Since Percy Jackson books are quite popular around the world, there's no reason to think that people in Rome wouldn't read the fanfiction. The books have made Greek and Roman mythology exciting for a new generation. Fanfiction allows fans to further explore the characters and world, and with Rome having a connection to the mythology on which the series is based, it's entirely possible that Romans would be among the readers of Percy Jackson fanfiction.
One great 'pjo avengers crossover fanfiction' is 'The Demigod Avengers'. It has an exciting plot where the demigods from Percy Jackson and the Olympians join forces with the Avengers. The character interactions are really well - written, like when Percy uses his water powers in a fight alongside Thor's lightning.
For demigods, it could either reinforce their existing views or introduce new perspectives. If a fanfiction delves deeper into a certain aspect of their world like the powers of a god, they might gain a new understanding. Mortals would have a more comprehensive view of the PJO world. They would learn about different characters and their backstories that might not be fully explored in the original books.
They might read it for entertainment. The Last Olympian has an exciting world full of magic and adventure, and fanfiction allows Romans to explore different aspects of that world that the original might not have covered fully.
Maybe they are interested in the story's unique setting and plot twists. The 'Battle of the Labyrinth' likely has elements that appeal to their sense of adventure and mystery.
Well, it might be appealing because it allows for a crossover of sorts. Fans get to see how the Roman characters, with their own sets of traits and beliefs, would react to the world of 'The Last Olympian'. It could also be interesting to explore the relationships that could form between Roman and Greek - inspired characters in the fanfiction, adding a new layer of complexity to the story.
One great 'athena pjo fanfic' is 'Athena's Wisdom'. It really delves into Athena's character in the Percy Jackson universe. The author does a wonderful job of showing her wisdom and how she interacts with the other characters. It has some really interesting plot twists that keep you hooked from start to finish.