I'm not sure specifically as there could be many different takes on this. It might be about Percy being in a dangerous situation and Quetzalcoatl, a powerful figure from mythology, coming to his rescue in the context of a fan - created fictional story.
There's no way to know for sure who the author is without more information. It could be anyone who is a fan of the relevant source material (maybe Percy Jackson series) and has an interest in Quetzalcoatl from mythology.
They could have a range of reactions. Naruto would likely be excited and eager to see new stories about his world. He loves adventures and would be interested in seeing different takes on his life.
The characters in 'httyd' would likely have complex reactions to the future in the fanfiction. Hiccup, for example, has always been a forward - thinking character. He would likely be intrigued by the possibilities the future holds, whether it's in terms of dragon - human relations or new inventions. However, he would also be concerned about protecting his tribe and the dragons. Astrid would be more practical. She would assess the potential threats and benefits. The dragons themselves, such as Toothless, would react based on their bond with their human counterparts. If they sense that Hiccup is positive about the future, they might be more open to it, but if there are signs of danger, they would be on high alert.
The younger characters in Encanto like Antonio would be excited. He loves stories and new ideas, so Mirabel fanfiction would be like a new adventure for him. He might want to share it with his animal friends. And Dolores, with her ability to hear everything, might already know about the fanfiction. She could be either intrigued or a bit worried depending on how the fanfiction is being received by the rest of the village. If it's causing a stir, she might be concerned about the family's reputation, but if it's positive, she would likely be quietly supportive.
Grell is quite popular as well. His over - the - top personality and his unorthodox views make for some really entertaining reaction scenarios. He can go from being overly dramatic to having some surprisingly deep insights in fanfiction.
Often, they are surprised. For example, if Marty watches the movies, he might be amazed at how his adventures were portrayed. He could laugh at some of the inaccuracies or be proud of how cool he looks on - screen.
If Naruto was an Ajin in a fanfiction, the characters in Naruto would have a mix of reactions. Hinata would be concerned for Naruto's well - being. She might be a bit scared at first because of his new and strange abilities, but still stand by him. The villagers, who have had a rocky relationship with Naruto in the past, might be afraid of him all over again. They could see his Ajin powers as a threat. On the other hand, Naruto's close friends like Shikamaru would try to understand what's going on and help Naruto control his powers if they can.
There could be characters who are skeptical. They might not believe what they read in the fanfiction about their future and dismiss it as just some wild imagination. After all, it's not part of their official story. For example, a very traditional and by - the - book character might not give any credence to the fanfiction's version of the future.