Another possibility is a character from a long - forgotten part of the Naruto world. This character could have been in hiding for centuries, training and perfecting their skills. They might have a power that is completely foreign to the known ninja world, like the ability to manipulate time or space in ways that no one else can. This would make them a top contender for the most powerful ninja in fanfiction.
One of the candidates could be a self - created character in fanfiction. For instance, a ninja who combines the powers of all the tailed beasts. This would make him extremely powerful as each tailed beast has its own unique and strong power.
Well, in Naruto fanfiction, the most powerful ninja often has unique jutsu. For example, they might have a super - powerful elemental control that far exceeds the normal limits in the original Naruto series. They could manipulate lightning, fire, water, etc. with incredible ease and strength.
Yes, in many fanfics Naruto is often depicted as the most powerful ninja. Writers love to enhance his already impressive skills from the original series and give him new abilities that make him unbeatable in their fictional stories.
Sasuke could also be a very powerful contender. His Sharingan and Rinnegan give him a lot of combat advantages. If he had Titan abilities, he could use his ocular powers to control and enhance the Titan form. He might be able to see the weak points of his enemies even more clearly in a Titan form and use his lightning - based jutsu more effectively, combined with the brute strength of the Titan.
It could be Naruto if he manages to master a blade that enhances his already strong abilities. His chakra reserve is huge, and with a blade that multiplies his power, he would be extremely formidable.
Naruto's character arc from the original series is a big part of it. He starts as an underdog and grows into a very powerful ninja. Fanfic writers take this growth and run with it. They might give him new forms of the Nine - Tails chakra, or make his Sage Mode even more potent. His ability to inspire others also gives him an edge in fanfics. People around him are motivated to fight better, which in turn makes him seem like the most powerful ninja as he is at the center of it all.
It could be a former Leaf Village ninja who left due to some sort of disagreement. Maybe someone who didn't agree with the village's leadership or its way of training young ninjas.
Well, Shikamaru Nara pops up a lot in fanfiction. His intelligence and laid - back attitude make for interesting stories. Rock Lee is another common character. His determination and unique fighting style are great for fanfiction plots. Gaara of the Sand is also frequently used, especially stories exploring his redemption and growth.
Naruto Uzumaki is definitely one of the most powerful. With his Nine - Tails chakra and a wide range of powerful jutsu. Sasuke Uchiha is also up there, with his Sharingan and his own unique abilities.
I think Doomguy could also be a top contender. His experience in fighting demons, his arsenal of powerful weapons, and his unwavering determination would make him a strong character in the Naruto - Doom crossover. He might not have chakra, but his combat skills are top - notch. If he were to learn some basic ninja techniques, he could become even more powerful.
However, it could also be Naruto himself. But in this alternate reality, he could have a different form of the Nine - Tails' power. Instead of just being able to use the Nine - Tails' chakra, he could merge with it completely, becoming a being of pure energy with unlimited power.