In a merged world, the power structures would change. The Gems, who are used to being the protectors of Earth in their world, would now have to share that role with Ben. Ben's aliens could provide new ways to defend the planet, while the Gems' magic could offer solutions to problems that Ben's aliens couldn't handle alone. Also, the villains from both worlds might team up, forcing Ben and Steven to form a united front. They would need to combine their powers, like Ben using an alien form that could enhance Steven's powers, or Steven using his powers to boost an alien's abilities.
Their worlds could merge through a magical portal. Maybe a powerful jutsu in Naruto's world accidentally creates a rift that connects to Bayonetta's dimension. This would allow characters from both sides to interact.
One creative crossover could be Ben using his alien forms in the world of Steven Universe. For example, Heatblast could help with some of the gem - related heat - based problems. Another could be Steven's healing powers affecting Ben's aliens in a unique way, like speeding up their recovery if they get injured during a fight. And perhaps the Omnitrix could interact strangely with the gem technology, leading to new power combinations.
The Crystal Gems would be in deep mourning. Garnet, being a fusion of love, would feel a profound sense of loss. Pearl, who has been so close to Steven, would probably retreat into herself, lost in memories. Amethyst might become angry and lash out at the world. Connie would be shattered, as Steven was not only her friend but also her partner in many adventures. The Diamonds would likely be shocked. Yellow Diamond might question her own actions and how they might have led to this. Blue Diamond would be consumed by grief, and White Diamond would perhaps see it as a sign that her ideas of control were wrong. Each character's reaction would be a complex mix of emotions, and it would reshape the relationships in the fanfic.
In a fanfic, the merging could also be due to a common threat. Suppose there is a dark force that wants to conquer both the ninja world and the vampire world. To fight this threat, Naruto and Moka's worlds start to merge gradually. This would result in unique alliances. For example, ninja and vampires might have to work together, with Naruto and Moka leading the way. They would need to find a way to combine their different fighting styles and powers, like Naruto's shadow clones and Moka's blood-based attacks.
I think it would be Ben. His ability to transform into various aliens brings a lot of possibilities. He can be a tough fighter like Rath or a strategic thinker like Grey Matter. In the crossover, seeing how he interacts with the Gems and Steven would be really fascinating.
In a Naruto and Batman crossover fanfiction, their worlds could merge in a few ways. One way could be through a portal. Maybe some sort of evil magic or advanced technology creates a portal between Konoha and Gotham. This would bring Naruto and his friends into Batman's world, or vice versa. Another possibility is that a powerful villain has the ability to manipulate space - time and decides to bring the two worlds together for his own evil purposes.
Their worlds could merge in a lot of ways. For instance, the technology from the Avengers' world could be introduced to Lilo and Stitch's Hawaiian setting. Maybe Stark Industries could set up a research facility in Hawaii to study Stitch's biology. And in return, Lilo could introduce the Avengers to the local culture and the concept of 'ohana', which could strengthen the Avengers' sense of family within the team.
He would probably have a very mixed reaction. On one hand, seeing how fans view his world and his story could be really cool. He might enjoy seeing different versions of himself and his friends. However, if there are inaccuracies or things that go against his values in the fanfiction, he could also be a bit put off. It really depends on the nature of the fanfiction he's reading.
The character design of female Steven may vary in many aspects. For starters, her overall physique would be more in line with a female body type, which could influence her movement. She might move more gracefully compared to male Steven. Her accessories could be different too. Instead of the simple star on his shirt, she could have a more elaborate necklace or bracelet. Her hair color could be the same, but the texture could be silkier. When it comes to her powers being represented visually, the effects could be more fluid and elegant, rather than the more straightforward visual effects associated with male Steven.
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.