Barry would probably be in awe of Batman at first. He's heard of the Dark Knight's reputation. Batman, on the other hand, would be cautious of Barry's powers. But as they start working together, Barry's friendly nature might start to break through Batman's tough exterior. For example, Barry might crack a joke during a tense situation, which could either annoy Batman or make him see a different perspective.
Their interaction could be a study in contrasts. Barry is used to his own world in Central City where things are a bit more open and fast - paced in a different way. Batman operates in the shadows of Gotham. When they meet, Barry might be eager to share his experiences as a speedster, while Batman would be more guarded. As they face challenges together, like a powerful mob boss who has ties to both cities, they would have to learn to communicate. Barry could use his speed to gather information quickly, and Batman could analyze that information and come up with a plan. Their relationship would likely grow from mutual suspicion to grudging respect and eventually friendship.
When it comes to interacting with villains, Barry and Bart could have different approaches. Barry, with his more cautious nature, might try to reason with some of the villains first, while Bart, being impulsive, could jump straight into the action. With their teammates like Aqualad or Superboy, they could be involved in rescue missions. Barry's ability to quickly assess a situation and Bart's speed in getting to the danger zone would make them a great duo in these scenarios.
Batman would likely be very reserved and cautious at first when interacting with The Incredibles. He's used to working alone most of the time. For example, when he meets Mr. Incredible, he might be initially skeptical of Mr. Incredible's more straightforward and sometimes over - confident approach. But as they get to know each other, they could start to respect each other's strengths. Mrs. Incredible might be intrigued by Batman's gadgets and try to learn more about them. Dash could be excited to see Batman's cool vehicles and try to race them. Violet might be a bit shy around Batman at first but could later open up and share her experiences of using her powers in a different way than Batman uses his skills.
Well, Naruto would probably be very open and friendly towards Batman. He'd be eager to learn about Batman's world and his cool gadgets. Batman, on the other hand, would be more reserved. He'd study Naruto, trying to figure out how his chakra - based powers work. As they interact more, Naruto's positive attitude could start to chip away at Batman's cold exterior. For example, when they're in a fight against a villain, Naruto's shouts of encouragement might inspire Batman to push himself further. And Batman's calm and calculated approach would help Naruto think more before he acts.
The Swat Kats would likely be in awe of Batman's detective skills at first. Batman, on the other hand, might be impressed by the Swat Kats' aerial combat capabilities. They would probably start off a bit cautious around each other, but as they face challenges together, they would begin to trust and rely on one another.
If Batman were to interact with the Saints Row characters, it would be quite a contrast. The Saints are often more brash and willing to break the rules for their own gain or to take down their enemies. Batman, on the other hand, is all about upholding the law in his own way. He would likely be frustrated with their methods at first. For example, when the Saints use excessive force or steal cars, Batman would probably lecture them. But the Saints might see Batman as a bit of a stiff at first, until they realize his skills could be useful.
One possible plot could be that Barry Allen, while chasing a meta - human criminal, accidentally runs into Gotham City. There he meets Batman who is initially suspicious of this super - fast stranger. They could end up teaming up when they realize the criminal they are after is part of a larger, more sinister plot that involves both Central City and Gotham. Barry's speed could help Batman in getting to places quickly and in combat situations, while Batman's detective skills could assist Barry in figuring out the criminal's motives.
Iris would probably continue her work as a journalist for as long as she could. She's a strong - willed woman. She'd document her pregnancy journey, sharing her experiences and insights. And together, they'd start preparing the nursery, with Barry using his speed to paint and assemble furniture in no time.
The interaction between the two sets of characters could also be quite comical at times. Imagine Batman trying to ride a broomstick for the first time. He would be all serious and business - like, but it would be a completely new experience for him. And the Hogwarts students would be in awe of Batman's cool gadgets and his Batmobile. Some of the minor characters in the Harry Potter world, like Neville, could gain confidence from seeing Batman's determination. And Batman could learn about the importance of friendship and loyalty from the tight - knit group at Hogwarts.
Sailor Moon would probably be really curious about Batman. She'd be constantly asking him questions about his gadgets and his mission. Batman, being the brooding type, might be a bit annoyed at first but would soon realize her good heart. He'd start to respect her powers and they'd form an unlikely alliance.
Maybe he doesn't even know about fanfic. He's focused on his real - life superhero stuff and doesn't have time to explore what fans are writing about him.