Well, it could be about the Brotherhood of Steel's high - tech weaponry and combat skills being combined with the Avengers' superpowers. Maybe they team up to fight a common enemy that is a threat to both their universes, like an extremely powerful alien race that is seeking to conquer all dimensions.
In this fanfiction, Naruto could be on a quest when he stumbles upon the Brotherhood of Steel. He might see similarities between their cause and his own back in the ninja world. So, he decides to join them. His presence could stir up different reactions among the members. Some might be skeptical, while others are eager to learn from him. And as time passes, Naruto could play a crucial role in their battles, using his chakra powers in ways they've never seen before, and in turn, adapting to their high - tech weapons and strategies.
Definitely Iron Man and a Brotherhood of Steel member who is an expert in technology. Their exchange of ideas about advanced weaponry and engineering would be fascinating.
One possible plot could be that Superman finds himself in the Marvel universe due to some sort of interdimensional rift. The Avengers initially see him as a threat. But then they realize he's there to help against a common enemy like Thanos. Superman's powers would be a huge asset, and his sense of justice would align with the Avengers' mission.
One plot idea could be that the Brotherhood of Steel OC is brought to the Mass Effect universe through some sort of experimental portal. They could then use their unique skills in technology and combat to help the various species in the Mass Effect universe deal with the Reaper threat. Maybe they start by sharing their knowledge of advanced weaponry with the Alliance.
Well, one possibility could be that Venom, being an anti - hero, is initially seen as a threat by the Avengers. But then they realize that there's a greater enemy that they both need to face. Maybe an alien force that is immune to the Avengers' usual attacks but Venom's symbiotic abilities can somehow counter. So, they reluctantly team up, with Venom constantly trying to assert his own way of doing things, leading to some interesting clashes and character development within the team - up.
One possible plot could be that the gods in the Percy Jackson universe sense a great threat from another dimension (the Marvel universe). Percy and his friends are sent to team up with the Avengers. Percy's water powers could be useful in fighting villains like Electro. Annabeth's strategic mind would assist in planning battles against foes like Loki. They all have to learn to work together, with Percy and the Avengers initially having some clashes due to their different ways of handling things.
One possible plot could be that Naruto, with his godlike powers, is somehow transported to the Avengers' universe. He might initially be seen as a threat due to his unknown abilities. But then, he proves his worth by helping the Avengers fight a powerful common enemy, like Thanos but even more powerful. His jutsu and chakra control could offer unique strategies in battles.
A cool plot might involve an enemy that uses both Chakra and Infinity Stones' power. Naruto teams up with the Avengers. The Avengers are amazed by Naruto's ability to use his Nine - Tails' Chakra. Naruto, on the other hand, is in awe of the high - tech weapons and superpowers of the Avengers. They combine their powers and skills, with Iron Man creating special suits for Naruto that can enhance his jutsu, and together they fight the powerful foe.
A cool plot might be that a new villain emerges who has the power to steal the powers of superheroes. This villain targets both Ben's aliens and the Avengers. Ben and the Avengers have to work together to not only stop the villain from stealing more powers but also find a way to get their powers back. Ben's knowledge of his Omnitrix and the various alien weaknesses could be crucial in devising a plan, while the Avengers' combat experience and teamwork skills would be invaluable in facing the challenges along the way.
Well, it could be about Naruto somehow getting involved with the Dark Brotherhood. Maybe he's transported to their world and has to learn their ways while still keeping his ninja skills. He might face challenges like trying to fit in with their code of conduct.