Percy would probably find it hilarious. He has a good sense of humor and would likely enjoy the wild and crazy scenarios fans come up with. He might even share the funnier ones with his friends at Camp Half - Blood.
Naruto, being the open - minded and adventurous type, would likely find it fun to read fanfiction about himself. He could be amused by the creative ideas, even if some are a bit far - fetched. He might even take some of the positive ideas and think about applying them in his real adventures. Rias, however, would approach it more skeptically. As a devil princess, she has a reputation to uphold. She would carefully analyze how the fanfiction portrays her, and if it goes against her values or the image she wants to project, she might be a bit offended. But if there are some good aspects, like new ways of handling her devil powers or relationships, she might consider them.
The Flash would likely find it really entertaining. He might enjoy reading about his super - speed being used in all sorts of crazy ways in the fanfiction. And he could also use it as a way to pass the time when he's not out saving the day. He might even start to wonder if some of the ideas in the fanfiction could actually work in real - life superhero situations.
Naruto would be thrilled. He loves attention and the idea that people are writing stories about him would make him feel really special. He might even try to find the authors and befriend them.
Draco would likely be disdainful at first. He has a high opinion of himself and might not like how some fanfictions depict him. Harry might be more curious and open to it, as he's always been more accepting of different ideas.
The Capitol citizens would likely be entertained. They live in a world of excess and novelty, so reading fanfiction about the Hunger Games characters would be just another form of amusement for them. However, the tributes from the districts might have a more complex reaction. For those from the poorer districts, it could be a source of hope or a cruel reminder of their situation, depending on how the fanfiction is written. For example, if a fanfic shows a district winning in a way that seems impossible in reality, it could give them hope, but if it's a cruel or inaccurate portrayal, it could be disheartening.
They might be shocked at first. I mean, seeing their own stories being written in a different way by fans would be quite unexpected. Sirius might find it really cool and be eager to read more, while James could be a bit more critical, thinking about how accurate the portrayal is. Remus would probably be more laid - back and just enjoy the different interpretations.
There are also those who would be intrigued. Clary, being the curious one, would probably read fanfiction with great interest. She might be amazed at the different ways fans have imagined the story continuing or the relationships evolving. She could even get some inspiration from it for her own adventures, thinking about how the fans' ideas could be incorporated into her real - life challenges in the Shadowhunter world.
Then there are those characters who would be indifferent. Characters who are more focused on their own goals in the Vampire Knight world, like some of the minor vampire characters, might not care much about what is written in the fanfiction. They are more concerned with their own survival and power struggles within the vampire society, so fanfiction about them might seem like an unimportant distraction.
Jean might be a bit embarrassed. If the fanfic has some romantic or over - the - top heroic scenes about him, he'd probably blush and try to act like he doesn't care, but secretly he'd be a bit flattered. He's always had an ego, so while part of him would be like 'this is so cheesy', another part would enjoy the attention.