In a crossover with the One Piece world, Luffy could be a fascinating character to interact with Naruto. Luffy has his own crew which is like a family, and he could show Naruto how a real family supports and loves each other. Also, Shanks, who had a big impact on Luffy's life, could be another interesting crossover character. He could offer Naruto some words of wisdom and guidance regarding his family situation, and maybe even give him some new powers or abilities.
In a crossover with the DC Universe, Batman could be an interesting character. Batman, who also had a tragic past, could understand Naruto's feelings of being neglected. He could take Naruto under his wing and train him in new combat and detective skills. Another interesting character could be Superman. Superman, with his kind - hearted nature, could show Naruto what a real family should be like, as he has the Kents as his loving family.
One potential crossover character could be Harry Potter. Imagine Naruto, with his immortality, meeting Harry in the wizarding world. Naruto could teach Harry some ninja skills, and they could fight together against Voldemort. Another could be Superman. The contrast between Superman's superpowers and Naruto's ninja skills, along with Naruto's immortality, would make for an interesting story.
Kakashi from Naruto himself could be part of a 'grey' themed crossover within the Naruto universe. Maybe a situation where Kakashi's past and his more mysterious side are explored further, and Naruto has to work with him in a darker, more complex mission that delves into the grey areas of the ninja world.
It could be an evil mage from Fairy Tail who sees Naruto as an outsider and a threat to the balance of power in the magic world. This mage might try to use Naruto's neglected past against him, trying to manipulate him into doing bad things.
One possible plotline could be Naruto finding a new family in the crossover world. For example, if it's a crossover with the Harry Potter universe, he might be taken in by the Weasley family who see his potential and give him the love and support he never had in his own family. Another plotline could be Naruto using his skills to prove his worth to his neglectful family after being influenced by the new world he's in. He could return to his own world with newfound confidence and make them realize what they missed out on.
One potential crossover character could be Goku from Dragon Ball. Since Naruto has godlike powers in this scenario, a meeting with Goku, who also has superhuman strength and abilities, would be very interesting. They could have a friendly sparring match or team up against a common enemy.
Goku from Dragon Ball could be a great crossover character. His Saiyan powers and love for combat could contrast and interact in an interesting way with Naruto's ninja skills and immortal sage abilities. They could have epic battles or team up against a common enemy.
Luffy from One Piece would be a great crossover character. His carefree and determined nature would contrast well with Naruto's own. They could both bond over their love for their friends and their strong wills. Another good character could be Harry Potter. Imagine Naruto in the wizarding world, and he and Harry could exchange knowledge about their respective magic systems, with Naruto showing off his ninjutsu while Harry demonstrates spells.
They can be a great source of creativity. The lack of attention means the author has more freedom to experiment. They might combine Naruto's ninja world with a post - apocalyptic setting or a fairy - tale world. This gives a fresh perspective on the Naruto character and his abilities.
Definitely Naruto himself. He's the main character of the Naruto series, so he has to be there. In a crossover with Attack on Titan, he could meet Eren. Naruto's determination and Eren's drive to protect his people could make for an interesting dynamic between them.
One interesting aspect could be the unique character development. When Naruto is 'godlike', it can lead to new power dynamics and relationships in the crossover. For example, he might interact with characters from other universes in ways that are not possible in the original Naruto storyline. This can create exciting new plot twists and story arcs.