The seven characters from the relevant series are probably the main ones in 'The Seven Read House of Hades Fanfiction'. They would be the focus as they navigate through the events and challenges in the House of Hades. It's possible that the fanfic author might also give more focus to certain characters among the seven, depending on the plot they are weaving.
In House of Hades fanfiction, Percy Jackson is always an interesting character. His heroic deeds and his relationship with Annabeth are often explored in different ways. Another character could be Nico di Angelo. His complex past and his powers make for great plot points in fanfictions.
The plot could also change due to the characters' new relationships formed as a result of reading fanfiction. In a fanfic, there could be a different dynamic between two characters. When they read it, they might start to act differently towards each other in the real story. Take Piper and Jason for example. If they read a fanfic that portrays their relationship in a new light, they might start to have different conversations and interactions, which could then affect the overall plot of their journey through The House of Hades.
One interesting aspect could be seeing how different characters react to the fan - created scenarios. For example, if Percy reads a fanfiction where he has a different quest in The House of Hades, his thoughts and emotions might be a fascinating study. Maybe he'd be amused by some out - of - character interpretations or feel inspired by new takes on his relationships with other characters like Annabeth.
You can try some popular fanfiction websites like Archive of Our Own (AO3). It has a large collection of fanfictions including those for 'House of Hades'. Just search for 'House of Hades' in the search bar on the site.
Some forums dedicated to Rick Riordan's works might also have fanfiction shared by the community. You can search for ones that focus on 'The House of Hades' and look for the demigod - related stories there.
I recall reading a fanfic called 'Hades' Hidden Treasures'. It was set in the House of Hades and explored some of the uncharted areas of the underworld. The author did a great job of creating a sense of mystery and danger, which made it really engaging. It also had some unique interpretations of the magic system within the House of Hades.
One thing that could happen is that they are either amused or offended by how they are portrayed. If the fanfiction writer has a very different view of their personalities, it could be quite a shock for them. For instance, if Leo is made out to be much more serious than he actually is in the books, the real Leo might find it really strange. Or if Piper is given some new powers in the fanfiction that don't exist in the original, they would have to figure out how that would work in the context of their world.
It would be quite an interesting scenario. The gods might be amused by the creative interpretations of their stories and characters in the fanfiction. Some might be offended if the portrayals don't match their self - perceived grandeur. For example, Zeus might not like being depicted as a bumbling fool in the fanfic.