What could be the plot of a 'Ben 10 Justice League crossover fanfiction'?

In a Ben 10 and Justice League crossover fanfiction, there could be epic battles. Ben could use his alien forms to team up with Superman and take on powerful villains. For example, Ben as Four Arms could help Superman in a physical fight against a huge and strong enemy.

The Highbreed could also serve as the main villain. They are a powerful and xenophobic race in the Ben 10 universe. In a crossover, they might view the Justice League's world as a place to expand their territory. They could use their advanced technology and large numbers to attack. Ben would have to convince the Justice League that the Highbreed are a serious threat and together they would need to find a way to stop the Highbreed's invasion, perhaps by using Ben's alien forms like Upgrade to hack into their technology and the Justice League's strategic planning.

Well, the plot could involve Ben Tennyson and the Young Justice team teaming up to fight a common enemy like Darkseid. Ben could use his various alien forms to complement the powers of the Young Justice members. For example, Heatblast could help Superboy when dealing with cold - based threats.

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.

One possible plot could be that the Hulk is somehow transported to the DC universe and is initially seen as a threat by the Justice League. They might try to subdue him, but then realize he's not entirely a villain. Maybe there's a common enemy that forces them to team up. For example, a powerful alien force that is causing destruction in both the Marvel and DC universes. The Hulk's brute strength combined with the Justice League's diverse powers could make for an epic battle against this enemy.

Well, one possible plot could be that the Justice League and the Marvel heroes are brought together by a powerful cosmic entity to fight a common enemy that threatens both their universes. Maybe Thanos teams up with Darkseid, and the combined forces of Superman, Batman, Captain America, and Iron Man have to figure out how to work together to stop them.

A cool plot could be that a dimensional rift opens up and pulls some of the Young Justice characters into the Ben 10 universe. They then have to find a way to get back home. Along the way, they meet Ben and join forces with him. Ben shows them around his world, and they help him deal with some local threats. For instance, Aqualad could use his water - based powers in conjunction with Ben's Four Arms in a fight against a group of robotic enemies that are causing chaos in a city near Bellwood.

A cool plot could be that the Justice League discovers a strange energy signature that turns out to be Iron Man's arc reactor. They track it down and find Iron Man. Iron Man is initially out of his depth in this new world of superpowers. But he uses his wits and technology. For example, he could upgrade the Flash's suit to make him even faster, and in return, the Flash helps him understand the new world he's in. Together, they all face off against Darkseid who has plans to invade both universes.

A plot could involve Goku being summoned to the DC Universe by a powerful magic user who believes Goku can help stop an impending apocalypse. The Justice League is skeptical of this strange, powerful being from another world. However, as they face challenges together, they start to trust Goku. For example, when they are up against a horde of powerful demons, Goku's speed and strength are crucial. He could teach some of the League members about ki control, and in turn, they could teach him about teamwork in a more strategic sense compared to his usual battles on Earth.

Well, perhaps the plot starts with a group of villains from both universes teaming up. The Power Rangers are in over their heads as these villains are using a combination of magic and advanced technology. The Justice League, on the other hand, is also struggling as their usual tactics don't work. The Rangers reach out to the League through some interdimensional communication device. They then meet up and combine their forces. For example, Wonder Woman and the Pink Ranger could lead the charge in combat, while the Flash and the Red Ranger use their speed to disrupt the villains' plans. Eventually, they defeat the villains and each group learns something new about teamwork from the other.