I think Ben's alien form, XLR8, and Quicksilver would make an interesting pairing. They are both super - fast and could have some epic races or team up in battles where speed is crucial. Another great pairing could be Ben as Diamondhead and Captain America. Diamondhead's tough crystalline form could provide cover and offense, while Captain America's leadership and combat skills would guide their strategies in a fight.
Definitely Ben Tennyson and Iron Man. Tony Stark's high - tech gadgets and intelligence would pair well with Ben's Omnitrix. They could exchange knowledge about technology and come up with some really cool inventions together. Also, Iron Man could probably upgrade the Omnitrix in some way.
One of the most interesting pairings could be Ben as Upgrade and Vision. Since Upgrade can merge with technology, he could potentially merge with Vision and create a whole new form of super - being with combined powers. Also, Hulk and Ben as Four Arms could be a great duo. They are both physically strong and could have some intense battles side by side, with Four Arms' extra arms giving him an edge in grappling and close - combat situations.
Black Widow and a sneaky, intelligent minion from the Overlord world would be cool. Black Widow could use her spy skills to outwit the minion, or they could end up working together for some strange reason. Maybe the minion has some information she needs to save the Avengers who are trapped in the Overlord world.
Storm and Thor would be an amazing pairing. Storm has control over the weather, and Thor is the God of Thunder. They could create some truly epic weather - related attacks together. Imagine them combining their powers to create a massive super - storm to take down a powerful enemy. Also, Jean Grey and Doctor Strange would be very interesting. Jean Grey's powerful psychic abilities and Doctor Strange's magic could lead to some really mind - boggling interactions. They could explore different dimensions of the mind and magic together, perhaps even finding new ways to use their powers in combination.
Hulk and Doppo Orochi would make for an exciting pairing. The Hulk's uncontrollable rage and immense strength against Doppo's years of martial arts training. Doppo might initially try to calm the Hulk using his skills, but when that fails, he has to use his grappling and fighting skills to hold his own against the Hulk. This could lead to a really intense and action - packed encounter.
I think Wolverine and Black Widow would make an interesting pairing. Wolverine's brute strength and regenerative abilities paired with Black Widow's stealth and combat skills would be a great combination. They could have some really cool fight scenes together, like taking on a group of bad guys in a dark alleyway. Wolverine could do the upfront slashing while Black Widow uses her acrobatic moves and gadgets to take out the enemies from different angles.
Sasuke and Black Widow. Both are complex characters with a dark past. They could bond over their experiences of loss and redemption. Black Widow might be able to teach Sasuke some new combat techniques, while Sasuke could show her some of his ninjutsu skills. It would be interesting to see them on a stealth mission together.
Eggsy and Iron Man would make a great pair. Eggsy is a bit more rough - around - the - edges and from a different background, while Tony Stark is a genius billionaire. They could bounce off each other with their different perspectives. Eggsy might be in awe of Stark's technology at first, but then start to contribute his own unique ideas, and Stark could be amused and intrigued by Eggsy's street - smart solutions to problems.
I think Loki and Mal would make a very interesting pairing. Loki is known for his trickery and Mal has her own devious side. They could either be at odds, constantly trying to out - scheme each other, or they could team up for some self - serving purpose. Their combined cunning could lead to some very unpredictable and exciting storylines.
I think Ben and Erza would make a great pairing. Erza is a very disciplined and powerful mage. Ben with his Omnitrix could learn a lot from her in terms of strategy and self - control. On the other hand, Erza would be fascinated by Ben's alien forms and their unique abilities. They could team up in battles and Erza might even give Ben some tips on how to better handle his powers in the magical world of Fairy Tail.
Definitely Harry Potter and Spider - Man. Harry could teach Peter about the magical world, like how to use a broomstick. And Peter could show Harry how to use his web - slingers in a more creative way in combat. They're both young heroes with a strong sense of justice, so they'd get along well.
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.