It could be an original character. For instance, a young ninja who was experimented on by a rogue group and turned into a super soldier. He has to struggle with his new powers and the fact that he was used against his will, and his journey to find his true self and purpose in the Naruto world.
Well, it depends on the specific fanfiction. There are numerous fanfictions out there with different interpretations of Naruto. Some might focus on his regular ninja skills and not turn him into a super soldier, but in others, he could be given super - strength, super - speed, and other qualities typical of a super soldier to make for an interesting and unique story.
One idea could be a super soldier from another land coming to the Naruto world with unique jutsu that no one has seen before. This could create a lot of mystery and excitement as the Naruto characters try to figure out this new threat or ally.
His speed is another characteristic. Naruto could move at blinding speeds, making it almost impossible for opponents to track him. In some fanfictions, he can zip around the battlefield so fast that he appears as a blur, dodging attacks effortlessly and launching his own counterattacks in an instant.
Super Soldier was an urban novel that was published on multiple online novel platforms. There were many versions and authors of super weapons, including Meticore and A Pot of Daughter's Red. This novel told the story of a supernatural being reborn in the city, possessing the body of a special forces soldier and punishing evil and promoting good. The protagonist in the novel faced all kinds of difficulties and the siege of beautiful women, showing his super strength and wisdom. However, the specific plot and story development needed further reading to understand.
One main theme is loyalty. Just like in the original Naruto series, in 'naruto soldier fanfic', the characters, especially those in the role of soldiers, show loyalty to their village, comrades, and leaders. For example, Naruto might be depicted as a soldier who would do anything to protect Konoha.
If Naruto becomes a super soldier in fanfiction, he may change in terms of his personality too. With great power often comes a sense of responsibility or in some cases, overconfidence. He could start to view himself as an even greater protector of the Hidden Leaf Village, but also might struggle with the newfound power and how it sets him apart from his friends. Also, the story could explore how the other characters react to this 'super' Naruto, whether they are in awe, jealous or feel more secure with him around.
The US soldier could be a reincarnation of a powerful ninja in the Naruto universe. They start to have strange dreams about the Naruto world and gradually discover their past life. With their modern - day military knowledge and the latent ninja powers from their reincarnated self, they can make a big impact. For instance, they might introduce new forms of weaponry or training methods to the ninja, which could be a fresh take in the fanfic.
One common theme is the clash of cultures. Naruto's world is full of ninjas and chakra, while the Winter Soldier's world has advanced technology and a different kind of warfare. Another theme could be redemption. Just as the Winter Soldier has a past to atone for, Naruto also has his own demons to face, and in fanfics, they might help each other in that journey.
I recommend "The Rise of the Tribe at the foot of the Vast Mountain." The beginning of this fantasy-epic fantasy novel described the tribe in the forest that was once exposed to the world. The protagonists grew up in this primitive barbarian tribe and accepted various races, gradually becoming an invincible empire. The story also had elements such as otherworld, lords, and magic, which was in line with the style of a super-powerful soldier novel. I hope you like this fairy's recommendation. Muah ~๐