It would be a very chaotic story. Naruto's positive and determined nature would clash with Joker's insanity and Harley's wildness. Maybe Naruto would try to bring some sense of justice to their chaotic world.
The story could involve Naruto learning some rather unorthodox fighting styles from Joker and Harley. He might also struggle with their moral ambiguity while still holding onto his own ninja values. Since Naruto is used to a more structured ninja world, the anarchy around Joker and Harley would be a huge adjustment for him.
Well, in this fanfic scenario, Naruto's growth would be extremely different. He would be exposed to a world full of crime and mayhem from a young age. Joker and Harley might see Naruto as an interesting experiment or a tool at first. But Naruto, with his strong will, could gradually influence them in some ways. For example, he might inspire Harley to question her loyalty to Joker if he shows her a more positive and healthy relationship model. And he could also make Joker think twice about his random acts of violence if Naruto's ninja code of protecting the innocent starts to rub off on him.
His abilities might take on a more unpredictable edge. He could incorporate some of Joker's trickery into his combat. For example, using misdirection like Joker does in his schemes.
Well, it would be a really wild and crazy story. Naruto's ninja world and Harley Quinn's chaotic Gotham-esque world would collide. Naruto might pick up some of Harley's unpredictability and her sense of humor. He could also learn some unique combat styles from her. Maybe he'd be more carefree and less bound by the traditional ninja rules.
In such a fanfic, Naruto might grow up with a much stronger sense of family. Kushina could pass on her Uzumaki tenacity and unique skills directly to Naruto. He might be more confident and less of an outcast as Kushina would surely protect him from the villagers' scorn.
In such a fanfic, Naruto might learn different values from Iroh. Iroh could teach Naruto about patience and inner peace, which are things Naruto lacks in the original story. He may also introduce Naruto to different forms of strategy and wisdom, which would greatly change Naruto's way of approaching battles and life in general.
A Naruto Harley Quinn crossover fanfic might start with some kind of interdimensional rift that brings Naruto into Harley Quinn's world. Naruto, with his strong sense of justice, would likely be confused by the chaos and the different moral code in Gotham. Harley Quinn, on the other hand, would probably find Naruto's powers and his naivete quite interesting. She might try to use him for her own gain at first, but as the story progresses, they could develop an unlikely friendship. The fanfic could also explore how Naruto's ninja techniques would be perceived in the world of Batman and his rogues gallery. For instance, his shadow clone jutsu could be a real head - turner. And Naruto would have to adapt to the more modern and gritty setting of Gotham compared to his own feudal - like shinobi world.
In a fanfic where Naruto is raised in the Forest of Death, he might become extremely tough. He'd have to fight for survival from a young age. Maybe he'd befriend some of the dangerous animals there, learning their ways to stay alive. He could also develop unique ninja skills by adapting to the harsh environment of the forest.
It could be really interesting. Maybe Naruto would have learned the Hyuuga's unique techniques earlier and developed differently.
In such a fanfiction, Naruto might develop a very different personality. He could be more chaotic and unpredictable like Joker. His moral compass might be a bit skewed, and he'd probably use unorthodox methods to achieve his goals. For example, instead of Naruto's usual straightforward and positive approach, he might play mind games with his opponents.
Well, it would be a wild mix. Harry might grow up with Harley's chaotic energy and unique sense of humor. He could be more unpredictable in his magic use, perhaps using spells in unorthodox ways like Harley uses her weapons. Also, his view of the wizarding world might be a bit skewed, seeing things more like Harley sees Gotham, with a touch of anarchy.
Well, it could have Minato training Naruto from a young age. Naruto might grow up more confident and with better control over his chakra earlier. He'd probably be less of an outcast in the village too.