One idea could be Vegeta arriving in the DC universe during a major crisis. He might initially be seen as a threat but then teams up with Superman. Their powers are quite different, with Vegeta's energy blasts and combat skills from Saiyan training, and Superman's super strength and flight. Another idea is Vegeta getting involved in the Gotham underworld, facing off against villains like the Joker. He could use his no - nonsense attitude to deal with the chaos there.
Vegeta's prideful and competitive personality would make him a force to be reckoned with in the DC universe. He would likely see many of the heroes as rivals and constantly strive to prove himself superior. For example, he might challenge Batman in a battle of wits and combat skills, not realizing at first that Batman has his own unique ways of winning. His no - surrender attitude would also be a key factor, especially when facing powerful villains like Lex Luthor who use their intelligence and resources to cause trouble.
One idea could be a crossover where Vegeta ends up in Gotham City. He might initially be seen as a threat by Batman, but then they realize they can work together to take on a common enemy like Darkseid. Vegeta's combat skills and power would be a great asset in the DC universe filled with various threats.
Well, Vegeta could be a sort of anti - hero in the DCU. His aggressive nature and desire for power could put him at odds with some of the more morally upright heroes like Superman. But at the same time, his strength would be respected. He might form an uneasy alliance with characters like Lex Luthor who also have an interest in power, though their goals would be different.
Another idea is that Greninja gets exposed to some kind of meta - human - creating substance in the DC universe and gains new powers. It could then join the Teen Titans, sharing its unique Pokémon abilities with the group. It would be interesting to see how Greninja interacts with characters like Robin, Starfire, and Cyborg, and how it uses its powers in battles against the Titans' enemies.
Power is a common theme. Since Vegeta is extremely powerful, seeing how his power compares to characters from other universes is always interesting. Another theme is culture clash. For instance, when Vegeta enters the Harry Potter world, his Saiyan warrior culture clashes with the wizarding culture. Pride is also a theme. Vegeta's Saiyan pride often plays a role in how he interacts with characters from other fandoms.
In a strange turn of events, a portal opened up and Vegeta found himself in Gotham City, home of Batman. Vegeta was confused but ready for a fight. Batman, always cautious, observed Vegeta. Eventually, Batman convinced Vegeta that there was a greater threat that required their combined efforts. The Justice League, including Wonder Woman, Flash, and Aquaman, joined them. Vegeta was impressed by their diverse abilities. During the battle against a mind - controlling villain, Vegeta's brute strength and the Justice League's strategic planning worked in harmony. Vegeta learned about teamwork from the League, and they all respected his warrior spirit in the end.
Maybe there's a multiverse event that causes Peter Parker to be transported to the DC universe. He meets Superman first, and Superman is initially a bit wary of this strange new hero with spider - powers. But as they face a common enemy, like Lex Luthor who has somehow gotten his hands on some Oscorp tech, they learn to work together. Peter can use his scientific knowledge from his own world to help Superman figure out how to disable the dangerous tech.
Well, first, a good DC crossover fanfiction has to have interesting character interactions. For example, seeing how Batman would react to meeting Wonder Woman for the first time in a new context. Second, a unique plot. Instead of the typical 'save the world' plot, it could be something like the heroes having to solve a mystery that involves different dimensions. Third, accurate portrayals of the characters. If Superman is in it, he should still be the big - hearted, powerful hero we know.
The plot could start with Vegeta being exiled from his own planet due to some political intrigue. He ends up on Earth, where he crosses paths with the Justice League. At first, there is tension as the League is unsure of his intentions. But when a powerful enemy, like Darkseid, starts to target Earth, Vegeta decides to help. He teams up with Superman, and they have an epic battle of strength. Meanwhile, Batman uses his detective skills to figure out a weakness in the enemy's plan. Wonder Woman, Aquaman, and Flash also play their parts, with Vegeta adding his Saiyan speed and power to the mix. In the end, they defeat the enemy, and Vegeta decides to stay on Earth for a while to learn more about these strange heroes.