Blake and Grey Matter would be an interesting pair. Blake is very intelligent and strategic. Grey Matter, being a small and highly intelligent alien, could help Blake with her plans and strategies. They could work together to outwit their enemies. For example, when facing a complex situation with a group of Grimm and some human enemies, Grey Matter could come up with a clever plan and Blake could execute it using her stealth and combat skills.
I think the interaction between Ruby and Ben would be really interesting. Ruby is very energetic and has a strong sense of justice. Ben, with his experience of using the Omnitrix to save the day, could share some of his stories with her. They could also have some friendly competitions regarding their combat skills, like who can take down a group of Grimm faster, with Ruby using her Crescent Rose and Ben using one of his alien forms.
Deadpool and Yang could also be really interesting. Yang is tough and has a bit of a hot - headed side. Deadpool would probably egg her on in fights, and she'd either be really annoyed or find his bravado kind of cool. They could have some epic battles together against the Grimm, with Deadpool making inappropriate jokes all the while.
Another interesting interaction could be between Gwen (from Ben 10) and Nami (from One Piece). Gwen's intelligence and magical abilities would contrast with Nami's skills in navigation and her love for treasure. They could exchange knowledge, with Gwen teaching Nami some basic magic spells in exchange for Nami teaching Gwen about navigation techniques across the Grand Line.
The interaction between Ben and Robin would be really interesting. Robin is a great strategist and detective, while Ben is more of a brash hero who relies on his alien forms. They could learn a lot from each other. Robin could teach Ben about planning ahead and thinking through his actions, while Ben could show Robin how to be more adaptable in combat by using different alien abilities.
Another interesting interaction would be between Aqualad and Ripjaws. Aqualad has his own water - based powers and a strong sense of leadership in the underwater domain. Ripjaws, being an alien fish - like form of Ben, could bring a different perspective. They could work together to explore underwater areas or fight against water - related threats, sharing their knowledge of different aquatic environments.
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.
Definitely Iron Man and Ruby. Ruby is young and full of enthusiasm, while Iron Man is a genius billionaire. Their interactions could be really fun as Ruby would be in awe of his technology, and Iron Man would be impressed by Ruby's determination and natural combat skills. He might even see her as a little sister figure and mentor her in some ways.
Another interesting interaction could be between Red Hood and Blake. Blake, with her Faunus background and her own complex views on justice, could have some really deep conversations with Red Hood. They might debate on when it's okay to take extreme measures in the name of justice.
Naruto and Ruby would be really interesting. Ruby is young and full of energy, much like Naruto. They could bond over their shared enthusiasm for protecting others. Naruto could show Ruby some of his cool ninja moves, and Ruby could introduce Naruto to Crescent Rose. Another interesting interaction would be between Sakura (from Naruto's harem) and Weiss. Weiss is from a wealthy family and is very proper, while Sakura is a strong - willed medical ninja. They could have some really fun arguments and also learn from each other's skills.
I think Naruto and Weiss would have some great interactions. Weiss is from a high - class family and is very proper, while Naruto is this rough - around - the - edges ninja. Their clash of cultures could lead to some really funny and also some really deep moments. Maybe Weiss could teach Naruto about the importance of elegance in combat, and Naruto could teach Weiss about the value of hard work and determination from his own experiences growing up.
Satsuki Kiryuin and Ben would be really interesting. Satsuki is so calculating and in control. When she meets Ben, she would probably be intrigued by his Omnitrix and see it as a potential tool for her own plans. Ben, on the other hand, would be wary of her motives. Their interactions would be full of power plays and mind games as Ben tries to figure out if Satsuki is an ally or an enemy while Satsuki tries to manipulate Ben into doing what she wants.