Another plot could involve Willie Watt trying to redeem himself after his past actions in the series. He might face some internal conflict as he struggles between his old ways and the new, more positive path he wants to take. And Batman could be there to either guide him or be suspicious of his motives.
One possible plotline could be Willie Watt using his powers for good this time. Maybe he teams up with Terry McGinnis (Batman Beyond) to take on a new threat in Neo - Gotham. They could combine their skills, with Batman's combat abilities and Willie's electrical powers.
A more complex plotline could be a time - travel related one. Willie Watt accidentally gets sent back in time and has to figure out how to get back to his own time while also not changing the past too much. Batman Beyond could follow him to the past to make sure things don't go awry, leading to all sorts of adventures and interactions with the original Batman era characters.
You can start by looking on popular fanfiction websites like FanFiction.net or Archive of Our Own. Just search for 'Willie Watt Batman Beyond' in their search bars, and you might find some interesting stories.
Well, in 'batman retires fanfiction', perhaps Batman realizes that the city has changed. The crime has become more political and less about the kind of street - level villains he used to fight. So he decides to retire and focus on using his Bruce Wayne identity to influence Gotham in a different way, like through philanthropy and reforming the city's infrastructure. He might also start mentoring young minds to fight crime in more legal and social ways.
One possible plotline could be the exploration of new and powerful cards that emerge from a rift in time. These cards might have unique abilities that disrupt the existing dueling order in the Yugioh universe.
There could be a 'catwoman kills batman fanfiction'. A possible plot could be that Catwoman is in a situation where she has to choose between saving the city and Batman. She might think that sacrificing Batman is the only way to stop a greater evil from destroying Gotham. For example, if there's a doomsday device that can only be deactivated by Batman's death and she decides to go through with it.
One possible plotline could be that Meridian has some crucial information that Batman needs. Maybe Meridian has witnessed a crime related to one of Batman's archenemies. Batman chases Meridian to get that information before the bad guys do. He has to navigate through the dark alleys of Gotham, using his detective skills to track Meridian's every move.
The fanfic could explore how Terry's friends react to his parents' divorce. Some friends might be really supportive, while others might not know how to handle it. Terry could also meet new people through support groups for kids of divorced parents. In terms of the Batman Beyond world, his role as Batman could be affected by the divorce in terms of his availability. If he has to deal with court hearings or helping his parents move, he might not be able to be Batman as often. This could lead to some problems in Gotham that he has to figure out how to handle while also dealing with his family situation.
One possible plotline could be that Batman is tricked into joining the Dark Side. Maybe the Joker uses some elaborate mind - control device or false information to make Batman believe that the Dark Side has the right way to bring true justice to Gotham. For example, he could be made to think that by using more extreme and violent methods, he can finally stop all the crime in the city once and for all.
In some 'batman x kagome fanfiction' plotlines, Kagome might be mistaken for a meta - human in Gotham. Batman starts to investigate her, and as he does, he discovers the truth about her world. This could lead to a series of adventures as they both learn from each other. Another idea is that a villain from one of their worlds somehow manages to cross over to the other. They then have to combine their skills and knowledge to defeat the villain. There could also be a plot where Kagome uses her knowledge of ancient magic to help Batman upgrade his technology in a unique way.
One possible plotline could be that Darkseid is about to destroy Gotham or Earth in a way that Batman has no other option but to kill him. Maybe all of Batman's usual gadgets and allies are useless, and he has to use a kryptonite - like weapon (if it could affect Darkseid) to take him down.
A possible plotline could be a conflict between the two worlds. Maybe some evil force from Beyond Two Souls wants to use the power of the tailed beasts in Naruto's world, and Naruto and his friends have to stop them. Another could be a friendship - based plot where a character from Naruto, like Sasuke, befriends Jodie Holmes and they exchange knowledge about their respective worlds.