Well, in a crossover fanfiction, the Animorphs could team up with Ben 10. Maybe they'd face a common enemy that neither could defeat alone. For example, an alien race that has the ability to morph like the Animorphs and also has advanced technology like the villains Ben 10 faces. They could combine their powers and strategies. The Animorphs' knowledge of Earth animals and their morphing abilities along with Ben's various alien forms and his Omnitrix would make for some really cool battle scenes.
Ax from the Animorphs would also be a great focus. He's an alien himself, so his perspective on Ben and his powers would be unique. He could compare and contrast his own Andalite abilities with Ben's Omnitrix powers. Plus, Ax is really intelligent and his knowledge of different species and technology could add a lot to the crossover story.
In a Ben 10 Avengers crossover fanfiction, the story might involve Ben and the Avengers sharing their technology and knowledge. Maybe Iron Man could upgrade some of Ben's alien tech, while Ben could show the Avengers some unique alien abilities they've never seen before. It could also lead to some interesting character dynamics, like Spider - Man and Ben comparing their powers and how they use them to protect the city.
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.
Well, it could be really cool. Maybe the Gems would be intrigued by the technology of the Omnitrix. Steven might try to understand Ben's powers better and see if there are similarities between his gem powers and Ben's alien forms. And Ben could learn about the Gem culture. They could also exchange stories about their adventures and how they protect their respective universes.
Well, in Animorphs crossover fanfiction, a cool idea is when they cross over with superhero universes. For example, the Animorphs could meet the X - Men. The mutants' powers and the Animorphs' abilities would create some really unique battle strategies. Also, a crossover with 'The Hunger Games' could be intense. The Animorphs' skills would give them an edge in the arena, and they could fight against the Capitol's tyranny in a different way. And then there's the idea of crossing over with 'Percy Jackson'. The demigods and the Animorphs could join forces against mythological threats that cross over into the real world.
Ax is often a popular character to feature in crossovers. His alien nature and unique abilities make for interesting interactions. Also, Jake, as the leader of the Animorphs, is frequently used. His leadership skills can be contrasted or combined with characters from other universes. Rachel is another one. Her bold and sometimes reckless nature can create some exciting storylines when she meets different characters.
Well, if Ben was kidnapped in fanfiction, his friends would probably start a huge rescue mission. Gwen would use her magic and Kevin his powers to track him down. They'd face all sorts of challenges along the way, like bad guys trying to stop them or traps set by the kidnappers.
Well, it could be about a crossover in the Ben 10 universe that involves neglected or overlooked characters or storylines. Maybe it's a fan's attempt to give more spotlight to those parts that the official shows or comics didn't fully explore.
Well, it could be that his friends have to step up and protect the city while he's sick. Gwen and Kevin might have to deal with villains on their own, and they could struggle without Ben's usual power. Also, Ben might be really frustrated because he can't use his powers as he normally does when he's ill.
A character like Goku from Dragon Ball Z could also be in it. Ben 10 000's alien forms could face off against Goku's powerful Saiyan transformations. They might start off as rivals but then end up teaming up to fight a greater threat that endangers both of their universes.