Well, if Joker finds out Batman's identity in fanfiction, it's a really big deal. First off, Joker is unpredictable. He could do something as simple as showing up at Wayne Manor unannounced. This would put Alfred in danger. He might also start to manipulate the media. Since he knows Batman is Bruce Wayne, he could plant false stories about Wayne Enterprises to undermine Batman's financial support for his crime - fighting activities. Plus, he could use Bruce's family history and secrets to drive him crazy.
If Joker finds out Batman's identity in fanfiction, it could lead to a total breakdown of Batman's world. Joker might target Bruce Wayne's loved ones directly. He could expose Batman's identity to the public, causing chaos in Gotham as the people lose their faith in the symbol of Batman. And he would likely use this knowledge to create the most elaborate and cruel traps for Batman, knowing his true self.
The story often takes a dark turn. With Joker knowing Batman's identity, he can directly attack Batman's weaknesses. For example, if Bruce Wayne has a love interest, Joker might target her. This creates a new level of tension and danger in the story.
If Batman becomes Joker in fanfiction, Gotham would be in chaos. Batman is the symbol of justice and order, while Joker represents chaos and anarchy. Without Batman to protect the city, criminals would run wild. And as the new 'Joker', Batman might use his intelligence and skills in a very different and dangerous way, perhaps creating more harm than good.
One possible consequence is that Batman's loved ones would be in great danger. His enemies could target them to get revenge on Batman. Also, the public's perception of Batman might change. Some might see him as a hero who has been hiding his true self to protect them, while others could think he has been deceiving them all along.
Well, he might be initially confused. Batman is so focused on his mission in Gotham that fanfiction about a character like Slade might seem very strange to him. He could start investigating if he thought it had any connection to real - world threats or if it was somehow influencing public perception in a negative way.
If the Joker is captured by Batman in the fanfic, Batman could use this opportunity to study the Joker more closely. He might try to understand what really makes the Joker tick, his origin, and his motives in a deeper way. However, the Joker might be planning an escape even while being held captive. He could be using his time in captivity to set up a grander scheme that would put Gotham in even more danger once he breaks free, all while constantly playing mind games with Batman.
In this kind of fanfiction, there could be a lot of shock and disbelief among the characters at first. His friends might feel guilty for not noticing the signs earlier. They would probably become extremely protective of Percy.
They might be really shocked at first. Some might find it a bit strange or unexpected, especially Bakugo and Deku themselves. They could end up blushing or getting really embarrassed.
In such a fanfiction scenario, Naruto would likely be extremely hurt. He has deep feelings for Hinata, so finding out she cheats would shatter his trust. He might initially go into denial, not wanting to believe it. Then, he could become angry and might distance himself from Hinata. His friends would probably try to console him, but it would take a long time for him to get over the betrayal.
Well, first of all, the students would probably be shocked. His friends, like Ron and Hermione, would be extremely angry at the Dursleys. They might try to comfort Harry more often. And the school itself could start providing special resources for Harry, such as counseling or extra protection spells. Also, there could be a big change in the way the wizarding community views Harry. Instead of just seeing him as the 'Boy Who Lived', they would see him as a victim who needs support.
If Zeus were to find out about mal fanfiction, it would be a rather strange encounter of the ancient and the modern. Zeus, being a god in Greek mythology, is used to a certain kind of reverence in the stories told about him. Fanfiction often takes creative liberties and can deviate greatly from the original mythology. If the mal fanfiction makes him look weak or immoral, he might first try to understand this new form of storytelling. But if he feels it's an unjust slander of his character, he could try to find a way to put an end to it. Maybe he'd try to influence the minds of the writers to stop creating such unflattering stories about him. However, since he exists in the realm of mythology and fanfiction is a product of the human imagination in the modern world, it's a very odd scenario to consider.