One idea could be that Naruto is somehow transported to the Overwatch universe. He might mistake some of the heroes for ninjas at first. For example, Genji with his ninja - like appearance and skills. Naruto could try to form a team with the Overwatch heroes to fight a common enemy, like the Talon organization. He could teach them some of his ninja techniques in return for learning about their high - tech weapons and strategies.
One idea could be that the RWBY characters are transported into the Overwatch universe and have to team up with the Overwatch heroes to fight a new common enemy, like a powerful omnic - Grimm hybrid. Another could be a friendly competition between the two groups in a series of combat trials to see who is more skilled.
One interesting idea could be an Overwatch crossover with the world of Harry Potter. For example, Tracer could be a student at Hogwarts, using her time - traveling abilities in magical ways within the school. Another idea is a crossover with the Star Wars universe. Maybe Reinhardt as a Jedi, with his rocket hammer being a unique lightsaber - like weapon. And a crossover with the Lord of the Rings, where Orisa could be a guardian of a certain part of Middle - earth, protecting it from the forces of evil with her shield and gun.
One plot idea could be that the Overwatch heroes are transported to the Naruto universe. They have to adapt to the chakra - based powers and the different combat styles. Meanwhile, they might also introduce some of their own technology and teamwork concepts to the Naruto characters, leading to some interesting interactions and battles.
Another interesting concept could be a character swap. Imagine Tracer from Overwatch in the Halo universe, using her time - jumping abilities in the middle of a large - scale Halo battle. Or a Spartan in the Overwatch world, trying to adapt to the more urban and team - based combat scenarios there.
Well, a cool concept for an Overwatch RWBY crossover fanfic would be to focus on the technology aspect. Overwatch has a lot of advanced tech, and RWBY has its own unique Dust - based technology. The fanfic could explore how the two types of technology interact. For instance, Mercy's healing staff could be affected by Dust in the RWBY world, or Torbjörn could use RWBY - style materials to upgrade his turrets. And of course, the character interactions would be great. Winston and Zwei could be an interesting pair to write about.
Maybe in this fanfic, the ninjas in Naruto's world discover a strange technology similar to what's in Overwatch. They try to figure out how to use it while also dealing with a group of rogue ninjas who have been influenced by a dark power, which they call the 'Ghost'. Overwatch agents then show up to help, thinking the situation is related to their own world's problems. This leads to a lot of cultural clashes and interesting interactions between the two groups.
One possible plot could be that Naruto, in his Six Paths form, somehow gets transported to the Overwatch universe. He might initially be confused by the high - tech environment. He could then meet some of the Overwatch heroes, like Tracer. Maybe they start off as foes, with Naruto's power being seen as a threat. But as they learn more about each other, they team up to face a common enemy that is threatening both the world of Overwatch and Naruto's own world.
One idea could be that the Overwatch heroes are transported to the Attack on Titan world. Tracer could use her time - traveling abilities to outmaneuver the Titans. Maybe Reinhardt's shield would be crucial in protecting the Survey Corps from Titan attacks.
One interesting plot could be two Narutos from different timelines meeting. They could exchange stories about their battles and growth, and then team up to face a new, powerful enemy that neither could defeat alone.
Well, a possible plot could be that in the Naruto universe, a portal opens up and out come some of the Overwatch female heroes. Naruto, being Naruto, is intrigued and wants to help them find their way back. As they stay in his world, they learn about chakra and Naruto's way of life. In return, they teach him about their advanced technology. This interaction could lead to some romantic feelings developing among them, creating a harem - like situation. For instance, Mercy might be fascinated by Naruto's healing abilities which are different from her own and a bond could form between them.