Reinhardt and Yang would be quite a pair. Reinhardt is the fearless crusader with his rocket - powered hammer and shield, while Yang is a brawler with her gauntlets. They could have some epic battles side by side, and Yang could learn about honor and chivalry from Reinhardt, while Reinhardt could be impressed by Yang's tenacity and determination in the face of danger.
One of the most interesting pairings would be Reinhardt and Pyrrha. Reinhardt is a knight - like character in Overwatch, and Pyrrha was a very skilled fighter in RWBY. They both have a strong sense of honor. Reinhardt could teach Pyrrha some of his combat techniques from the Overwatch world, and Pyrrha could show Reinhardt some of the unique fighting styles in RWBY. Also, Widowmaker and Weiss could be an unexpected but fascinating pairing. Widowmaker's cold - blooded assassin nature could contrast with Weiss' more noble upbringing, and they could learn from each other in terms of combat and strategy.
I think Mercy and Ruby would make an interesting pairing. Mercy is a healer in Overwatch and Ruby is the leader of Team RWBY. Ruby could learn about Mercy's advanced medical technology and how she uses it in combat. Meanwhile, Mercy could be inspired by Ruby's determination and leadership. Another great pairing could be Winston and Yang. Winston is a brilliant scientist and a powerful fighter as a gorilla. Yang is a brawler with a lot of strength. They could have some epic sparring sessions and also exchange knowledge about strength - based fighting and scientific inventions.
Medic from TF2 and Mercy from Overwatch. They're both healers, but they have very different approaches. Medic is a bit more... unorthodox with his healing methods, like using his Medi - Gun. Mercy, on the other hand, is more angelic and serene. It would be fascinating to see how they interact, perhaps they could learn from each other's techniques and develop new ways to heal the combined team during a tough battle.
Hermione Granger and Weiss Schnee could be a great pair. Hermione is highly intelligent and studious, while Weiss is refined and also has a great deal of knowledge. They could bond over their love for learning and perhaps work together on some sort of magical - mechanical hybrid project. For example, combining Hermione's magic knowledge with Weiss' understanding of Dust to create something entirely new.
Ruby and Church could be an interesting pairing. Ruby is young and idealistic, while Church is often sarcastic and has a more jaded view. Their interactions could be really fun to read. Another would be Weiss and Tucker. Weiss is from a high - society background and Tucker is, well, Tucker. The contrast in their personalities and upbringing would make for an engaging story.
Naruto and Ruby would be an interesting pairing. Naruto's positive attitude and never - give - up spirit could mesh well with Ruby's determination. They could both inspire each other in combat and in their personal growth. Another good pairing could be Sasuke and Blake. Sasuke's brooding nature and his search for power could be contrasted with Blake's own past and her fight for equality. They could have some deep conversations about their motives and past traumas.
One interesting pairing could be Thor and Yang Xiao Long. Thor is a powerful Asgardian with his hammer Mjolnir, and Yang is a brawler with her powerful punches. They could have some great fight scenes together, and also share stories about their respective families and how they became strong. Another pairing could be Black Widow and Blake Belladonna. Black Widow's stealth and combat skills combined with Blake's agility and ability to use her shadow clones would make for an interesting dynamic.
I think pairing Ruby Rose with a Volt Warframe would be really interesting. Ruby is all about speed and her scythe - wielding skills, and Volt is known for its speed - enhancing abilities. They could learn from each other's combat styles and become a super - fast duo on the battlefield.
John Wick and Ruby would be an interesting pairing. Ruby is young and full of energy and hope, while John Wick is a jaded and highly skilled assassin. Their interactions could be really cool, with Ruby learning some more hardcore combat moves from John and John learning about the power of friendship and hope from Ruby.