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.
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.
Well, Naruto would likely be one of the main characters. His determination and strong will would be important in the brotherhood. Sasuke could also be a main character, with his power and complex personality adding depth to the group dynamics.
To create a believable character, first, give them a backstory that ties into the Brotherhood of Steel. For example, if they were an outcast in the Brotherhood for having unorthodox ideas about technology, that could explain their open - mindedness in the Mass Effect universe. Also, consider their skills. If they were a tech expert in the Brotherhood, show how they adapt those skills to the new technology in Mass Effect.
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.
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.
One interesting concept could be new jutsu combinations created by the characters. For example, the main characters might develop a jutsu that combines fire and wind elements in a unique way that wasn't seen in the original Naruto series.
Well, surely the original Avengers like Iron Man, Captain America, Thor etc. would be main characters. Their characteristics and abilities would likely be adapted to fit the 'steel' theme in some way.
One great X Men Evolution Brotherhood fanfiction is 'The New Order'. It offers a unique take on the relationships within the Brotherhood. The characterizations are really well - done, making it a must - read for fans.
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.