She could find out some secret plan that Bruce and Terry are working on. This could put her in danger as she now knows something she wasn't supposed to. She may have to be protected by Batman, which would be an interesting turn of events.
If Dana finds out, say, about the true identity of a new villain in the 'Batman Beyond' world, she could try to take matters into her own hands. However, she might not be fully equipped to handle it, leading to a situation where Terry has to rescue her while also dealing with the villain.
In many 'Batman Beyond' fanfictions where Dana finds out, it could be about her finding out Bruce Wayne is Batman. Maybe she stumbles upon some evidence in the Batcave or notices some similarities in Terry's behavior to Bruce. For example, she might notice Terry's fighting style is similar to what she's heard about Batman's. It could also be that she discovers some secret technology related to Batman that leads her to the truth.
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.
In such a fanfiction, it could be a really heartwarming story. Maybe Terry finally decides to put his dangerous Batman life aside a bit more for Dana. They could have a small, intimate wedding with their closest friends and family from the Batman Beyond world. The ceremony might be held in a beautiful, futuristic setting, like on a rooftop overlooking Neo - Gotham at sunset.
In this kind of fanfiction, Maddie might initially be shocked. She could feel a mix of disbelief and horror that her son Danny is a half - ghost. But then, she might start to see Danny in a new light. Maybe she'll realize all the times he was trying to protect the family from ghosts while hiding his secret.
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.
One great fanfiction could be where Terry and Dana go on an adventure together outside of Gotham. They might encounter some new villains or find a mysterious place. It could explore their relationship deeper, like how Dana reacts to Terry's double life as Batman.
It's possible that Draco would initially not believe what he hears about the Dursleys. But as he digs deeper, he realizes the truth. He might then face a moral dilemma. On one hand, he has been taught to look down on Muggles like the Dursleys. But on the other hand, their behavior towards Harry is clearly wrong. This internal struggle could be a major part of the fanfiction, and it could lead to his character development in unexpected ways.
Their relationship is appealing because it's a normal relationship in a world full of superheroes and villains. It shows that even Batman has a personal life. In fanfiction, we can see how they support each other through different situations, like Terry protecting Dana from the threats of his enemies.
One interesting plot point could be how they combine their lives. Since Terry has the double life as Batman, Dana might have to adjust to sharing her husband with the city. Another could be them starting a family and how they protect their children from the dangers of Neo - Gotham.
In such a fanfiction, Naruto might take on a protective role. He could use his ninja skills to keep the toddler safe from any potential threats in the Naruto world, like rogue ninjas or dangerous beasts.