In certain fanfictions, it could be an experiment gone wrong that causes a character to absorb Naruto's power. It might be a fellow Konoha ninja who was involved in some sort of experimental jutsu with Naruto. This ninja could be someone who is not typically a main character, like a random genin or chunin. The power absorption then becomes a central plot point as they try to figure out how to control the new power and deal with the consequences, both for themselves and the village.
Some fanfictions might feature new or original characters as the ones who absorb Naruto's power. These characters could be created specifically for the fanfiction to explore unique storylines. For example, a mysterious outsider who arrives in the Naruto world and has the ability to absorb powers. They target Naruto because of his reputation as a powerful ninja. They may not understand the full implications of absorbing his power and end up causing chaos in the process.
The absorption could potentially make Naruto an even more formidable force. Since Asura was known for his connection to life force and vitality, Naruto could gain an increased ability to heal himself and others. His already strong willpower might be further amplified, enabling him to resist more powerful genjutsu or mental attacks. And his physical abilities could reach new heights, allowing him to take on enemies that were previously out of his league with ease.
Naruto himself is often very popular. His energetic and determined personality makes for great crossovers with the Power Rangers. Then there's Kakashi, with his cool and mysterious nature. Rangers might be intrigued by his sharingan and ninja skills. Also, Tommy Oliver from the Power Rangers is a favorite. His long history in the Power Rangers series and his various ranger forms can bring a lot to a crossover story.
Often, Naruto himself can be portrayed as extremely powerful in raw power fanfiction. His already vast chakra reserves and his ability to access the Nine - Tails' power can be amped up even more. Sasuke is also a common choice, especially when his Sharingan and Rinnegan abilities are enhanced with additional raw power. Another could be Madara Uchiha. His already formidable skills and power can be made even more overwhelming in fanfiction, making him one of the most powerful characters in the raw power scenarios.
Naruto is still often a very popular character in such fanfictions. Since it's about altered powers, his character provides a great base to explore different power - up scenarios.
Naruto himself is often a popular character in such fanfiction. His growth potential and his already powerful abilities make him a prime candidate for further development in fan - created stories.
Well, in some Naruto power absorption fanfiction, there might be a new villain who has the power to absorb Naruto's power. This could change the whole dynamic of the story. Maybe this villain uses Naruto's power to control the Nine - Tails in a different way than Naruto does. Or perhaps the power absorption leads to a fusion of the absorber's own abilities with Naruto's, creating a completely new and overpowered ability. For instance, if the absorber has some water - based jutsu skills, when combined with Naruto's power, they could create a new type of water - chakra - enhanced jutsu that no one has ever seen before.
One of the most common allies in Naruto gains power fanfiction is Hinata. She has always been in love with Naruto, and when Naruto starts to gain power, she is right there by his side. She might use her Byakugan to help Naruto in battles or in his power - exploration. Another ally could be Shikamaru. His intelligence is a great asset, and he could help Naruto strategize how to use his new powers most effectively. Additionally, the Sage of Six Paths is often involved as an ally. He might appear to Naruto in visions or directly in person to guide him in his power - gaining journey, teaching him about the deeper secrets of chakra and the ninja world.
Orochimaru is a very likely character. He has always been shown to be extremely power - hungry in the original Naruto series. He's constantly seeking new ways to gain more power, whether it's through experimenting on others or trying to obtain the Sharingan. Another one could be Kabuto. He was influenced by Orochimaru and also had a strong desire for power. He tried to absorb all kinds of powers and knowledge to become stronger. And Madara Uchiha is also a candidate. His plan to create the Infinite Tsukuyomi was mainly driven by his thirst for power and his desire to reshape the world according to his own will.
In Naruto, Naruto Uzumaki himself is often very popular. His determination and growth throughout the series make him an appealing character in fanfiction. In the context of a harem, his friendly and somewhat naive nature can attract female characters from both universes. From Power Rangers, the Red Ranger is usually a favorite. He represents leadership and strength, which are attractive qualities. In a harem fanfiction, he might be seen as a protector figure for the female characters. Also, characters like Sakura from Naruto are popular as she can add a bit of a love - triangle dynamic with Naruto and the Power Rangers characters.
In this type of fanfiction, Sasuke could be one of the most popular characters. His cool and brooding nature would contrast with the more light - hearted Mew Mew characters. Also, characters like Ryou from Mew Mew Power, who has a bit of mystery to him, might attract a lot of attention. The combination of his knowledge of the Mew Mew world and his interactions with Naruto characters could make for some engaging storylines. And Naruto's friends like Shikamaru might also be popular as his laid - back yet intelligent personality could add a different flavor to the crossovers.