Who would be the most interesting character pairings in a 'Ben 10 and High School DxD Crossover Fanfiction'?

Ben and Frankie Stein could be a really interesting pairing. Ben, with his ability to transform into various aliens, is always ready for action and adventure. Frankie, on the other hand, is intelligent and curious about the world around her. They could work together to solve problems that arise from the crossover. Frankie might be able to analyze the Omnitrix technology, while Ben could protect her from any immediate danger using his alien forms.

Definitely Ichigo and Ben. Ichigo has his strong sense of justice and his powerful Hollow - Soul Reaper abilities. Ben, on the other hand, has the Omnitrix with all its different alien forms. They would make an interesting duo as they could learn from each other's fighting styles and powers. Ben could learn about the spiritual aspect of Ichigo's powers, and Ichigo could be amazed by the physical transformations Ben can do.

Ben and Ruby would be an interesting pairing. Ruby is young and full of energy, always eager to learn and improve. Ben, with his experience using the Omnitrix, could teach her a lot about adapting to different situations. And Ruby could show Ben the importance of teamwork in her own unique way.

Ben and Luke Skywalker would be a really interesting pairing. Luke is a powerful Jedi, and Ben has the power of the Omnitrix. They could learn a great deal from each other. Luke could teach Ben about the Force and self - control, while Ben could show Luke how to think outside the box when it comes to combat with his various alien forms. Another interesting pairing would be Ben and Han Solo. Han is a scoundrel with a lot of street smarts, and Ben could use some of that practical knowledge. Plus, Han would be fascinated by the Omnitrix.

For me, Ben and Han Solo would make a really cool pairing. Han is a scoundrel with a blaster, and Ben has his array of alien powers. They could get into all sorts of adventures together, like smuggling something important across the galaxy while being chased by the Empire. And another good pairing could be Ben's alien form, Swampfire, and Chewbacca. They could both use their physical strength and unique abilities to fight in battles, Swampfire with his plant - based powers and Chewbacca with his brute force.

Ben and Natsu would be an interesting pairing. Natsu is all about fire and brute strength, while Ben has the ability to transform into various aliens with different powers. They could have a friendly rivalry, like who can defeat an enemy faster. Ben could show off his alien forms to Natsu, and Natsu could teach Ben some fire - based magic tricks in return.

Ichigo and Akeno could also be an exciting pairing. Akeno has her own unique powers and a mysterious side. Ichigo's straightforwardness and strong moral code could contrast with Akeno's more complex nature. They could work together in battles, with Ichigo providing the brute force and Akeno using her strategic and powerful attacks.

Another interesting pairing could be Kevin from Ben 10 and Byakuya. Kevin has his unique powers related to absorbing and manipulating energy, which could contrast with Byakuya's refined and traditional Soul Reaper skills. They could start off as adversaries, perhaps misunderstanding each other's motives, but then come to respect and work together as they realize they are facing a common threat that requires both their skillsets to overcome.

Gohan and Issei would be really interesting. Issei is all about being a pervert and getting stronger in his own way. Gohan is this powerful yet humble Saiyan. Their different outlooks on power and relationships would create a lot of humorous and thought - provoking moments.

The Doom Slayer and Vali would make for an exciting interaction. Vali is a very powerful and ambitious character in High School DxD. He would likely see the Doom Slayer as a rival or a potential ally in his quest for power. The two of them could engage in some epic battles or team up against a common enemy. Additionally, the interaction between the Doom Slayer and Koneko would be interesting. Koneko is a quiet and strong - willed character, and she might be curious about the Slayer's motives and his unwavering dedication to his mission.