In fanfic, his identity reveal could also lead to a public outcry. Gotham's citizens might have mixed reactions. Some could see him as a hero who has been secretly protecting them, but others might fear his power and the fact that he has been operating outside the law. There could be calls for his arrest or for more government control over vigilantes.
Another consequence could be a shift in the power dynamic among the rogues' gallery. Some villains might see this as an opportunity to finally defeat Batman once and for all, while others might be more hesitant, as the open identity could mean new and unexpected alliances for Batman.
In some fanfic, he could choose to face the situation head - on. He would use his intelligence and skills to counter any threats that come his way due to the identity reveal. He might try to turn public opinion in his favor by showing that his actions as Batman were always for the good of Gotham, despite operating in secrecy.
One possible consequence could be that Peter Parker's loved ones are put in danger. Since his identity as Spider - Man is out, villains might target his aunt May or his friends to get to him.
One interesting idea could be the reaction of Gotham's citizens. They might be shocked to learn that the wealthy Bruce Wayne is Batman. Some might feel betrayed, while others could see it as a sign of hope that someone so privileged is using his resources to fight crime.
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.
One possible plotline could be the chaos that ensues in Gotham when Batman's secret identity is revealed. His enemies might target his loved ones directly. For example, the Joker could go after Bruce Wayne's family and friends in a more brazen way than before.
Obviously, Batman/Bruce Wayne himself. His butler Alfred would also be heavily involved as he has always been there to support Bruce. Alfred would likely be trying to protect Bruce and keep his remaining secrets safe.
Obviously, Batman/Bruce Wayne himself is a central character. His life would be turned upside down by the revelation of his identity.
One idea could be that Terry's identity is revealed to the public. This would lead to chaos as his enemies target his family and friends directly. His mother might be in danger, and he'd have to constantly protect her while still trying to fight crime. It could also make his relationship with Dana more complicated, as she now has to deal with the fact that her boyfriend is Batman.
Grayson might develop a different set of skills. Without Batman's training, he could focus on other areas, like more acrobatic skills or different forms of combat.
The consequences can be quite significant. For starters, Percy's relationships with his friends could be strained. His friends might be worried about Zeus's influence over him. Percy himself could start to resent Zeus's possessiveness, which might lead to him acting out. In the larger context of the fanfic's world, it could also cause an imbalance in the power dynamics among the gods. If Zeus is too focused on Percy, other important matters in the divine realm could be neglected, leading to chaos.