In some fanfiction, a crossover with a fantasy world might be explored. The Brotherhood of Nod could try to impose their order in a world full of magic and mythical creatures, leading to all kinds of conflicts and alliances.
One interesting storyline could be the Brotherhood of Nod crossing over with a post - apocalyptic world. The Nod's advanced technology and ideology could bring a new dynamic to the desolate setting.
Kane is often a very popular character. His charisma and leadership in the Brotherhood of Nod make him a central figure in crossovers. He can easily be the driving force in any interaction with other universes.
One interesting concept could be the introduction of characters from different universes into the Brotherhood of Steel's world. For example, bringing in a character with unique powers or a different moral code and seeing how they interact with the strict, technology - focused Brotherhood.
Another storyline might involve a Brotherhood of Steel member forming an unlikely alliance with a group of raiders. Maybe they find out that a greater threat, like a horde of super mutants, is approaching and they realize that by combining their skills and resources, they can better defend against it. This would create a lot of tension as the Brotherhood has a long - standing enmity with raiders.
One interesting storyline could be that the Glee characters end up in the Pokemon world. They could form a Pokemon performance troupe. For example, Rachel could be a trainer who uses singing to boost her Pokemon's power during battles. Finn might be more into the physical aspects of Pokemon training, like competing in Pokemon athletics. Another idea is that the Pokemon themselves could have musical abilities and they join the Glee club in a special Pokemon - human co - existing world.
One interesting storyline could be that Naruto and his friends somehow end up in the Voltron universe. They might team up with the Voltron paladins to fight a common enemy. Naruto's ninja skills could add a new dimension to the battles. For example, his shadow clone jutsu could be used to create diversions during a fight against a large Galra force.
In some Super Mario Crossover fanfiction, there could be a story where the power - ups from different games get mixed up. So Mario might find a power - up from a Zelda game that gives him the ability to use a sword like Link. This can lead to really unique battles and adventures as he has to learn to use these new abilities in his quest to rescue Princess Peach from Bowser.
Another possible storyline is that a villain from the Flash's world somehow ends up in the Glee universe and starts causing trouble. The Glee club members, with the help of the Flash (or someone with Flash - like powers), have to come together to defeat the villain. They could use their unique skills, like singing in harmony to disrupt the villain's powers or something equally creative.
One interesting storyline could be where Pokémon trainers from the Pokémon world end up in the Naruto universe. They might use their Pokémon to help in battles against the Akatsuki. For example, a Pikachu could use its electric attacks to counter some of the Akatsuki's jutsu that involve lightning - based defenses. Another could be Pokémon being used in the Chunin Exams, adding a whole new level of chaos and excitement.
In some 'naruto is a father crossover fanfiction', there could be a storyline where Naruto is a father in a crossover with the Harry Potter world. His child could be a student at Hogwarts, and Naruto, with his experience of being a hero, tries to understand the magic world and protect his child from the dark forces. Maybe he uses his chakra in unique ways within the magical environment.
One interesting storyline could be Naruto characters being transported to the RWBY world. For example, Naruto himself could end up at Beacon Academy. He might struggle at first to understand the concept of Dust and how the Grimm work. But his skills in ninjutsu could be a great asset in fighting the Grimm. Another storyline could involve RWBY characters going to the Naruto world. Ruby, with her scythe skills, could learn some ninja techniques and use them in combination with her own fighting style. Weiss might be intrigued by the different forms of chakra control and try to incorporate it into her Glyph magic.