Well, it could be really exciting. Maybe Naruto would learn some unique fighting techniques from Sub Zero. He might gain new ways to control his chakra, inspired by Sub Zero's ice powers.
Obviously, Naruto and Sub Zero are the main characters. Naruto is the one being trained, and Sub Zero is the trainer.
Yes, there are likely fanfictions out there with the concept of 'Naruto is Sub Zero'. You can start by checking popular fanfiction websites like FanFiction.net or Archive of Our Own. They have a vast collection of fan - created works and you might find some interesting crossovers with this premise.
One possibility could be that Naruto is transported to the Mortal Kombat universe and through some magical or technological means, he takes on the powers and identity of Sub - Zero. Maybe he has to adapt to the new combat styles and the brutal nature of the Mortal Kombat world while still retaining some of his Naruto - like traits such as his determination and never - give - up attitude.
If Naruto becomes Sub - Zero, his relationships would also be affected. His friends in Konoha might be a bit scared or at least very surprised at first. But Naruto being Naruto, he would try to show them that he's still the same person inside, just with different powers. And he might also make new friends in the Mortal Kombat - like world where Sub - Zero comes from, if that's the context of the fanfiction.
One possible plot could be Naruto being transported to the Mortal Kombat universe and somehow taking on the role of Sub Zero. He might have to fight in the Mortal Kombat tournaments using his ninja skills along with Sub Zero's ice powers.
I'm not entirely sure as I haven't read that specific fanfiction. It could potentially be about a story where Naruto is abandoned in a situation related to the Sub - Zero concept from Mortal Kombat. Maybe it's a crossover where Naruto finds himself in a frozen and desolate place like Sub - Zero's realm and has to figure out how to survive and get back to his own world.
The most common themes include her origin story. Many fanfics try to expand on how she became the female Sub - Zero we know. Her relationships are also a big theme. This can be romantic relationships, like with other Mortal Kombat characters, or platonic ones within the Lin Kuei. Additionally, the theme of self - discovery is often present. As she navigates the dangerous world of Mortal Kombat, she discovers more about herself, her strengths, and her weaknesses. And of course, the power struggle within the Mortal Kombat universe is a theme, with her being in the middle of it at times.
Well, it could be about Naruto learning some unique ice - related jutsus from Sub - Zero. Maybe he travels to a different dimension where Sub - Zero exists and starts his apprenticeship. This would change Naruto's fighting style and give him new abilities to face his enemies in the Naruto universe.
The main characters would be Naruto and Sub - Zero. Naruto is the one on a journey of learning, and Sub - Zero is the one imparting his knowledge. However, characters from the Naruto world like Kakashi could also play a role. He might be curious about Naruto's new training and offer his own advice based on his experience. Also, villains from both universes could potentially be involved, making Naruto use his newly learned skills against them.
Obviously, Naruto and Sub Zero are the main ones. Naruto brings his ninja abilities and his will to protect his friends and village. Sub Zero, with his ice - based powers and his own code of honor from the Mortal Kombat world.