Well, in some 'nightwing becomes batman fanfiction', there could be a plot where Nightwing has to adapt to Batman's no - kill rule in a more extreme way. Maybe he's faced with a villain who has caused great harm to someone he loves, and he has to find a non - lethal way to stop them while still upholding Batman's legacy. Also, his detective skills might be put to the test more than ever as he tries to solve complex cases that Batman usually handled.
One possible plotline could be Nightwing struggling to fill Batman's shoes in Gotham. He might face challenges like dealing with more dangerous villains who see him as a new target. Another could be his relationship with the other members of the Bat - family changing as he takes on the Batman mantle.
One possible plotline could be Batman using his new god - like powers to completely reform Gotham in an instant. He could eliminate all crime, poverty, and corruption with a single thought. Another might be him facing off against other god - like beings from different mythologies who see him as a threat to the balance of power in the universe.
Perhaps in the 'batman becomes a god fanfic', a plotline could involve Batman facing off against other god - like entities. He has to prove himself worthy of his new status among these powerful beings. This could lead to epic battles and alliances as he tries to protect not just Gotham, but the entire world or even the universe from threats that only a god - Batman could handle.
Obviously, Nightwing himself would be the main character as he's the one taking on the Batman role. Robin, if there's a younger Robin at the time in the fanfiction, would also be a key character. He might look up to Nightwing in his new role or have some doubts about him filling Batman's shoes.
One idea could be a story where Nightwing has to take over Batman's duties temporarily in Gotham. He faces a new villain who is specifically targeting Batman's absence and Nightwing has to prove himself not just as a replacement, but as a hero in his own right.
One interesting plot could be that they team up to take on a new and powerful villain in Gotham. Maybe this villain has some unique powers that force Batman and Nightwing to combine their skills in unexpected ways.
One possible plot could be that there's a misunderstanding. Maybe Batman has been mind - controlled and he hits Nightwing without realizing it. Nightwing then has to figure out how to break the control on Batman while also dealing with his own feelings of betrayal.
The power dynamic. Batman is the mentor, but Nightwing has grown into his own hero. Their sparring shows the shift in their relationship. It's exciting to see how Nightwing can now hold his own against Batman.
A great plot could involve Nightwing training a new generation of heroes in the 'Batman Beyond' universe. He could share his old - school combat techniques with the more tech - reliant heroes, leading to some interesting clashes and growth. For example, he might have a hard time getting used to the new gadgets while the younger heroes struggle with his more hands - on combat style. And together they have to face a villain who is exploiting their differences.
Well, one possibility could be a story where Batman slaps Nightwing out of extreme frustration during a mission gone wrong. Maybe Nightwing made a critical error that endangered the entire Bat - family, and Batman's reaction was a slap in the heat of the moment.
It can symbolize protection. Batman is the mentor, and when he carries Nightwing, it shows his instinct to keep Nightwing safe from harm, whether it's physical harm from villains or other threats.