In the fanfic, if Bruce goes to the Flash Point World, he could be in for a shock. The Flash Point World has a very different history and set of circumstances. He might find that his usual strategies don't work. He could also get involved in the events that led to the Flash Point in the first place, trying to either prevent or change them. There could be new alliances and rivalries for him to deal with as well.
Well, he might encounter alternate versions of his friends and foes. For example, he could find a different Batman or Joker. Maybe he'd have to adapt to a world with different rules and power dynamics.
Well, one possibility is that Bruce's skills and knowledge from his own world might not be as effective in the Flashpoint world. He could struggle to understand the new technology or the motives of the people there. On the other hand, he might also bring new ideas and perspectives that could change the course of events in the Flashpoint world. Maybe he'll try to fix some of the problems he sees, like the way certain relationships between characters have been distorted in this alternate reality.
He could have an adventure of trying to find a way back to his own world. It won't be easy as the Flash Point World has its own unique barriers.
He might meet an alternate version of Superman. In the Flashpoint world, Superman could be very different from the one he knows in his own world.
Well, perhaps the plot could revolve around Bruce's struggle to contain the chaos the Flash Point Joker brings. The Joker might be causing mayhem in a way that's different from the regular Joker. Bruce has to adapt his strategies, and in the process, he might learn some dark secrets about his own city or himself. It could also involve a psychological battle as Bruce tries to outwit the unpredictable Flash Point Joker.
In the fanfic, Goku could become friends with Naruto easily. Since they both have a strong sense of justice and a will to protect their friends. Goku might teach Naruto some of his training methods, like training under heavy gravity. And Naruto could show Goku the unique aspects of ninja villages and how they function.
In a fanfic where Gohan goes to the Naruto world, his presence would disrupt the balance. His Saiyan strength is on a different level compared to most Naruto characters. He might start by being confused about the ninja way and all the different clans. However, he could also introduce new concepts from his world. For example, his training methods. And he would probably make some really strange friends. Some ninjas might be in awe of his power, while others might be a bit scared. He could also end up having some really interesting battles against the strongest ninjas, like Naruto or Sasuke, which would be a clash of two very different power systems.
In a fanfic, their dynamic might be more extreme. The Flash Point Joker could be even more unhinged and unpredictable than the normal Joker. Bruce, on the other hand, might be more desperate to stop him quickly as the Flash Point changes could mean more dire consequences. So, it would be a more intense and urgent relationship compared to their usual cat - and - mouse game.
If Flash transports to a comic world, he might have to adapt to new rules and powers. Maybe he'll team up with comic heroes or even face off against them. It's hard to predict exactly what would happen, but it'd be an adventure for sure!
Maybe in the fanfic, there's a threat to the Wayne family fortune. Terry and Bruce have to work together, with the rest of the family, to protect it. This could involve using their wits and skills in different ways, and also show how the family members support each other in tough times.
In the 'Boruto Goes Kidnapped' fanfic, it could be that the kidnappers are after some special power that Boruto has. His father Naruto would be extremely worried and start gathering all the resources in the village to find his son. Meanwhile, Boruto might be trying to escape on his own, using any opportunity he gets.