The characters' interaction in a Ben 10 and Xenomorph crossover would be complex. Ben's personality as a hero would likely drive him to try and stop the Xenomorphs from causing harm. He might try to find a way to co - exist at first. But the Xenomorphs' aggressive nature would make that difficult. Some of Ben's alien forms, like Upgrade, could potentially merge with Xenomorph technology or biology, creating a whole new dynamic in their interaction.
Well, if we think about it, Ben is a young boy with a sense of adventure and a desire to do good. When he encounters the Xenomorphs, he would be both fascinated and scared. His first instinct would be to protect any innocent bystanders. The Xenomorphs, being the predators they are, would not understand Ben's motives. They would simply see him as something to either kill or use. However, as the story progresses, there could be a moment where Ben realizes that there might be a way to change the Xenomorphs' behavior, perhaps by using one of his more intelligent alien forms to communicate on a deeper level. This would lead to a series of interesting interactions between them.
Ben might initially be very cautious around the Xenomorphs. He's used to his own set of aliens, but these are something entirely different. He could try to communicate with them using his alien forms' unique abilities, but it might not work as the Xenomorphs are more about instinct. The Xenomorphs, on the other hand, would probably see Ben as a threat or a potential host.
Some of Ben's more heroic aliens, like Upchuck, could have really funny interactions. Upchuck might accidentally eat some of the devil fruits or other magical items in the DxD world, causing all sorts of wacky effects. And the angels in DxD might be initially suspicious of Ben, thinking he's some kind of new unknown entity. But as they see him fight against common enemies, they could start to respect him. Ben, on the other hand, would find the whole concept of the different supernatural races in DxD fascinating and might want to learn more about their powers.
The Autobots could see Ben as an interesting new ally. They might be initially cautious, but as they see him use his Omnitrix to transform and fight, they gain respect for his abilities. Ben, on the other hand, would be in awe of the Transformers' size and power. He could learn from them about advanced technology and use that knowledge to upgrade his Omnitrix. The Decepticons would likely see Ben as a threat or a tool to be used. They might try to capture him or the Omnitrix. Ben's alien forms could have different interactions with the Transformers. For example, XLR8 could be used to quickly scout out Decepticon bases, while Diamondhead could provide a strong defense against their attacks.
In a crossover fanfiction, the interaction between Ben's powers and the bending in Avatar could also lead to new power - ups or evolutions. Maybe by being exposed to the chi - based bending, some of Ben's alien forms could develop new abilities. For instance, his Swampfire form might gain the ability to control plant - like elements in a more refined way similar to how an earthbender controls plants. And on the other side, benders could learn from Ben's alien forms about different ways of using energy and physical strength, which could lead to new bending techniques.
Well, it could be really exciting. Ben 10 has all those cool alien forms he can transform into. Imagine him facing off against a Xenomorph. His Heatblast form might be able to use its firepower to keep the Xenomorph at bay. And his Four Arms form could have a physical fight with it. It would be a battle of different kinds of alien powers.
Harry might be initially terrified but then use spells like Stupefy to try and stun the Xenomorphs. Hermione would probably research about them in the Hogwarts library to find a more permanent solution.
Ben would likely be the wild card. He'd be excited to show off his alien forms to the Young Justice characters. Aqualad might be a bit skeptical at first, but Robin could be intrigued by Ben's tech. Superboy might see Ben as a rival in terms of power.
Well, Jack Harkness from Torchwood would probably be quite intrigued by Sherlock's deductive abilities. He might initially test Sherlock, throwing out strange cases to see how he solves them. Sherlock, on the other hand, would likely be a bit put off by Jack's flamboyant nature at first but would soon realize his value in dealing with the more otherworldly aspects of cases.
Thor would likely be seen as a very powerful and strange figure by the Vikings. They might be in awe of his strength and his magic hammer. Some Vikings might be very eager to prove themselves to him, while others could be more cautious. Thor, on the other hand, might view the Vikings as brave but primitive at first. He could gradually come to respect their fighting spirit and honor code.
At the start, the NCIS agents would likely view Nightwing as an unknown vigilante. But as they get to know him, they'd see his value. For example, Tony from NCIS might crack some jokes at Nightwing's expense at first, but then be impressed by his detective skills. Abby would be fascinated by Nightwing's gadgets. And as for Nightwing, he'd adapt to the NCIS agents' more official and structured way of doing things. He might also share some of his knowledge about the criminal underworld in Gotham with them, which could be very useful in their investigation.
The characters would likely have a mix of admiration and friendly rivalry. For example, the cool and collected protagonist of Persona 5 might be intrigued by the more laid - back nature of the Persona 4 protagonist. Meanwhile, the Persona 3 protagonist, with his more somber and serious demeanor, could initially seem a bit intimidating to the others. But as they get to know each other, they would start to bond over their shared experiences of fighting Shadows and protecting their worlds.