If Naruto becomes a vampire in fanfiction, he might gain the power of flight. This would give him a huge advantage in battles and in getting around quickly. He could also have the ability to transform into a bat or some other small creature for stealth and infiltration purposes. His chakra control might also be enhanced by his vampire nature, allowing him to perform more complex and powerful jutsu with greater ease.
He could gain super strength, allowing him to overpower enemies more easily than before. His speed would be enhanced to a level that might make him almost impossible to catch. And he could have the power of hypnosis, which would be useful in combat and getting information from foes.
He might gain enhanced physical strength like Bane. Bane was known for his brute force, so Naruto could have a similar boost, being able to overpower his opponents more easily in hand - to - hand combat.
Well, if Naruto becomes a Sannin, he would surely gain some amazing new abilities. For one, he could inherit Tsunade's healing abilities. This would be a great addition to his skills as he could not only fight but also heal his comrades on the battlefield. In terms of Jiraiya, Naruto might be able to master more advanced forms of Rasengan, inspired by Jiraiya's own jutsu creativity. And from Orochimaru, he could get a better understanding of the chakra nature and how to manipulate it in more complex ways, like Orochimaru did with his snake - like jutsus.
One possibility is that he gains enhanced speed and stealth. As a chunin, he'd need to be more covert in his missions. He could learn to move so quietly that even sensors would have a hard time detecting him. And his speed could be on a level where he can quickly close the gap between him and his enemies without them realizing it until it's too late.
Well, Naruto reincarnated as a Fox God could potentially gain the power of illusion - casting on a grand scale. Since foxes are often associated with trickery in myths, he could create illusions that are almost impossible to break. His connection to the spiritual world might also be strengthened, allowing him to communicate with other spirits or even draw power from them. And of course, his physical strength would be enhanced to match his new divine status.
Well, Naruto could gain the ability to heal in a more advanced way. Just as the avatar can sometimes use their connection to the elements to heal, Naruto might be able to do the same with his chakra. He could also have the power to merge with the natural world around him, similar to how the avatar can connect with nature. This would give him an edge in stealth and surprise attacks. Plus, he could develop a new form of sensing, being able to detect not just chakra but also the energy of the elements around him.
He might gain a more powerful form of Rasengan, like a Rasengan that can change its shape and properties according to the situation. Maybe he has better control over his Nine - Tails chakra and can use it in more creative ways without losing control.
He could gain the power of super strength that far surpasses his demigod strength. This would allow him to lift extremely heavy objects or even mountains. Another power might be the ability to control the very essence of the ocean on a global scale, not just local waters like he could as a demigod.
Naruto might gain the power of shikai and bankai. Shikai is the first release of a zanpakuto's power, and bankai is the ultimate form. Naruto, with his determination and strong will, would strive to master these forms. Shikai could give him new attacks and defenses, while bankai could make him an extremely powerful force. For example, his bankai could combine his ninjutsu skills with the zanpakuto's power in a unique and devastating way.
His powers would likely incorporate more water - based elements. He might be able to control mist in ways that are more powerful and sinister than normal. For example, he could create mist that not only obscures vision but also drains the chakra of those who are trapped in it. His physical abilities could also be enhanced in a way that is more in tune with the Mist's fighting style, like being more stealthy and unpredictable in combat.
One possible power is the ability to produce honey. This might seem strange, but in a fanfiction world, it could be used in various ways. For example, he could use the honey to heal wounds, as honey has some natural antibacterial properties. Another power could be related to the bees' communication. If Naruto can understand the bees' complex communication system, he could use it to send coded messages or even disrupt the communication of his enemies if they also use some form of insect - based communication.