It could be really exciting. Imagine the characters from Hunter x Hunter with their unique nen abilities in the world of NCIS investigations. Gon could use his enhanced senses to help Gibbs' team track down clues. Killua's assassin skills might come in handy during dangerous undercover operations. And the NCIS agents would be both baffled and intrigued by these strange new allies.
In such a crossover, the NCIS agents like Ziva and Tony would be in for a shock when they meet Gon and his friends. Gon's unwavering determination to find his father could somehow tie into an NCIS case. Maybe his father was involved in something that has implications in both the Hunter x Hunter universe and the world of NCIS. The Hunters' training and the NCIS' forensic knowledge would combine to create a unique and thrilling story of mystery and adventure.
I think Killua and Ziva would make a great pair. Killua has his assassin background and lightning - fast reflexes, and Ziva is a former Mossad agent with her own set of combat and investigative skills. They could have some great action scenes together and also share their experiences of growing up in a world of danger and secrecy.
It would be extremely exciting. You might get to meet all the unique characters like Gon, Killua, and Kurapika. You could experience the world of Nen and participate in the Hunter Exam. Maybe you'd even form your own team and go on adventures, facing off against the Phantom Troupe or exploring the Dark Continent.
It's hard to say for sure, but Naruto could be a very strong contender. His ability to create countless clones and his massive chakra reserves would give him an edge. Plus, his Sage Mode and later forms are extremely powerful. However, Ging from Hunter x Hunter also has a lot of mystery and power surrounding him. He might be able to outwit Naruto in a battle of wits. But then again, Sasuke with his Rinnegan and Sharingan abilities could also be very formidable in this crossover.
One idea could be a crossover with Naruto. Gon and Naruto could team up and learn from each other's unique ninja and hunter skills. They might compete in a friendly way to see who's stronger in different aspects like physical strength or strategy.
Leorio and Yang would be quite a combination. Leorio's medical knowledge could be useful when Yang gets injured in battle. And Yang's brash and energetic personality could pull Leorio out of his more serious and studious mode. They could also have some funny exchanges about money and values, as Leorio is often concerned about finances while Yang is more about the thrill of the fight.
One common theme is the clash of powers. Since both Naruto and Hunter x Hunter have their own unique power systems, like Naruto's chakra and ninjutsu, and Hunter x Hunter's Nen, fanfictions often explore how these powers interact when the characters meet. For example, how would Naruto's Rasengan fare against a Nen - based attack.
In a 'Hunter x Hunter crossover RWBY fanfiction', it could be that the Nen abilities in Hunter x Hunter are seen as a form of magic in the RWBY world. Some of the RWBY characters are fascinated by this new power source and want to learn about it. So, they make a deal with the Hunters to exchange knowledge about their respective powers. This leads to some really interesting training sessions and battles where they combine Nen and Semblance powers.
One idea could be that Naruto and Gon meet during a strange interdimensional rift. They initially misunderstand each other but soon realize they have a common goal of protecting their friends and worlds. Another could be that the Akatsuki and the Phantom Troupe somehow cross paths and form an uneasy alliance to achieve their own ends, which involves stealing powerful artifacts from both Naruto's world and the Hunter x Hunter world. And a third idea might be that Naruto and Killua swap places for a short time, experiencing the different power systems and cultures of each other's worlds.
A prevalent theme is friendship across universes. In 'hunter hunter crossover fanfiction', characters from different shows come together. They start as strangers but often form strong bonds as they face challenges together. Also, the theme of survival in a new and strange world is common. When the Hunter Hunter characters end up in a different universe, they have to figure out how to survive in that new environment.
The characters' different power systems would also play a role in their interactions. Naruto might be curious about Nen and ask a lot of questions. Gon and Killua would be amazed by Naruto's chakra - based powers. They could also learn from each other. For instance, Naruto could teach Gon and Killua about his ninja training techniques, like stealth and quick - thinking in combat situations. And Gon and Killua could show Naruto how to better utilize his senses in battle, which is something they're good at in the Hunter x Hunter world.