Well, one interesting aspect could be the different power sets. Naruto's ninja abilities combined with the wacky technology of Futurama. And if we consider the addition of Leia, her leadership skills could add a new dynamic to the story.
One interesting crossover could be Naruto characters in the Futurama universe trying to use their ninja skills in a high - tech world. For example, Naruto running through the streets of New New York. Another could be the Planet Express crew getting involved in ninja - related adventures in the Hidden Leaf Village. It would be really cool to see Fry interact with Naruto and his friends, like sharing his stories from the 20th century while Naruto shows off his Rasengan.
Naruto might be curious about Futurama's technology and try to learn from it. Leia could befriend Naruto due to his strong sense of loyalty. And the Futurama characters would probably be quite confused by Naruto's ninja powers at first.
One interesting crossover could be Naruto characters getting the ability to transform into Transformers. For example, Naruto himself might be able to turn into a powerful Autobot with his own unique color scheme and abilities based on his ninja skills like the Rasengan could be incorporated into a weapon in his Transformer form.
One interesting crossover could be Naruto characters having to face off against Thanos. Imagine Naruto's Rasengan against Thanos' Infinity Gauntlet power. It would be an epic battle of different power systems.
One interesting crossover could be Naruto characters in the Diablo world facing Diablo's demons. For example, Naruto using his shadow clones to fight hordes of imps. Another could be Sasuke with his Sharingan trying to decipher the magic in Diablo's world. It would be really cool to see how Naruto's chakra system would interact with Diablo's magic system.
One interesting crossover could be the characters' different abilities interacting. For example, Naruto's shadow clones and Sonic's speed could be combined in a unique way during a battle. Maybe they team up to fight a common enemy that threatens both their worlds.
Well, in a Halo x Naruto fanfiction, there could be a scenario where the Halo's Covenant discovers the ninja world. Naruto and his comrades might have to learn about the Halo technology quickly to defend their world. And at the same time, the Halo characters could be intrigued by the chakra system and the unique jutsus of the ninjas. For example, Master Chief could be in awe of Naruto's Rasengan and try to find a way to incorporate that kind of power into his own combat style.
In 'the boondocks x naruto fanfiction', a possible crossover could involve Naruto characters visiting the world of 'The Boondocks'. Picture Naruto and his friends being shocked by the modern - yet still complex - social issues in the Boondocks' setting. They might try to use their ninja way to solve some of the community problems there.
One idea could be a crossover where Naruto's world of ninjas somehow intersects with Leia's galaxy far, far away. Maybe Naruto's skills in combat and his ability to persevere could be useful in the fight against the Empire. For example, his shadow clone jutsu could be used for strategic diversions in battles.
Perhaps in this fanfiction, there is a prophecy in both the Naruto and Futurama universes about a coming disaster. The prophecy states that a hero from each world must join forces to prevent it. Naruto is chosen from his world, and Leela from hers. They meet and at first have trouble understanding each other's cultures and ways of life. However, as they train together to face the impending doom, they start to respect and rely on each other. They face a powerful villain who is trying to merge the two universes into a chaotic mess, and they must use their combined strength and skills to stop him.