Often, the resemblance could be in terms of the way Naruto stands or moves in these fanfictions. For example, Naruto might adopt a more menacing stance similar to Madara's. Also, his hair could be described in a way that it seems to mimic Madara's wild look, perhaps when he's in the middle of using a powerful jutsu.
In this Naruto fanfiction, the new character, let's call him Kaito, who looks like Madara, enters the Hidden Leaf Village. He has the same piercing eyes and a similar hairstyle. The villagers are initially on guard, but as they get to know him, they realize he's different. He has his own dreams of bringing peace, not through domination like Madara once aimed for. Kaito begins to train with the young ninjas, sharing his unique combat skills and insights, and gradually becomes an important figure in the village.
In this kind of fanfic, the author may describe Naruto's resemblance to Madara in terms of their auras. Naruto could have an aura that is as intimidating as Madara's. For example, when he enters a room, people might feel the same kind of pressure as they would when Madara was around. And perhaps Naruto starts to have some facial expressions that are similar to Madara's, like a certain smirk or a serious frown.
One possible plot development could be that Naruto's new look causes confusion among his friends. They might start to question if he's still the same Naruto they know. Another is that enemies could be either more afraid or more eager to fight him, thinking he has some of Madara's power.
One possible plot development could be that Naruto is mistaken for Madara by some of the older characters who knew Madara. This could lead to some interesting confrontations and misunderstandings.
Yes, in many fanfictions Naruto can be depicted as a prodigy like Madara. Fanfiction writers often take the original traits of Naruto, such as his strong will and determination, and amplify them to a level similar to Madara's natural talent. They might show Naruto quickly mastering powerful jutsu or having strategic insights that are on par with Madara, making him a prodigy in that fictional context.
The plot often takes unexpected turns. Since Madara had such a big impact on the Naruto universe's history, when his essence or traits are introduced into Naruto's story in fanfiction, it can completely change the direction of the plot. For instance, relationships between characters might be altered. Naruto's friends might view him differently if he starts to show signs of Madara - like behavior, which leads to a whole new set of storylines and conflicts.
In fanfiction, Naruto's quick learning of advanced jutsu can make him like Madara. For instance, if he masters complex space - time ninjutsu in a short time. Also, his ability to influence others and lead, similar to Madara's charisma, can contribute to this perception.
In fanfiction, a Naruto and Madara fusion could be extremely powerful. They have very different personalities and abilities. Naruto is known for his optimism and his ability to connect with people, while Madara is more brooding and power - hungry. The fusion might combine Naruto's Rasengan with Madara's Sharingan abilities, creating a truly formidable force.
One possible plotline could be Naruto being influenced by Madara's ideology and starting to question the traditional ways of the Hidden Leaf. He might start to think that a more forceful approach is needed to achieve true peace, similar to Madara's view. Another plotline could be Naruto somehow inheriting some of Madara's powers or abilities and having to deal with the consequences. This could lead to a power struggle within himself as he tries to balance his own nature with the new - found Madara - like qualities.