What could 'betterfiles' that Naruto summons in fanfiction be?

A likely main summon could be Gamabunta. He's big, powerful, and has a long - standing relationship with Naruto. He could teach Naruto some really advanced water - based jutsu.

Well, it depends on the specific fanfiction. Fanfiction writers have a great deal of creative freedom. Some might choose to give Naruto the power to summon 'betterfiles' as part of a new plotline they've devised. Maybe they want to introduce a new type of creature or object that Naruto can summon to make the story more interesting. However, not all fanfictions will follow this idea, so it really varies from one piece of fanfiction to another.

Well, in such a fanfiction, Naruto might learn unique skills from the summons. For example, he could learn stealth from a cat - like summon or brute strength tactics from a bear - like one.

He could have a dragon as a summon. A powerful and majestic dragon that can breathe fire or ice, which would give Naruto a huge advantage in battles.

The fanfiction might start with Ilya performing a summoning spell that she thought would bring something else, but instead, Naruto appears. Since Naruto is always eager to make friends and help others, he quickly bonds with Ilya. They could then embark on a journey to find a way to send Naruto back home. During this time, Naruto could teach Ilya about the importance of perseverance and believing in oneself, just like he learned in his own adventures in the Naruto world.

One possibility is that Naruto's connection with the summons would make him more in tune with nature. For example, if he was raised by toads, he might learn their unique jutsu faster and have a different approach to combat. He could also have a different view on friendship and loyalty as summons often have a strong bond with their summoners.

Perhaps in the fanfiction, the Akatsuki organization somehow gets hold of the power to summon Final Fantasy creatures. Naruto then has to figure out how they got this power and stop them. He might have to train hard to master the same summoning techniques. He could end up summoning a Shiva to counter the Akatsuki's Ifrit summon in a huge battle that shakes the very foundations of the ninja world.

The plot could be that Raven is in a dire situation in her world. She discovers an ancient spell that might be able to bring a powerful ally to her side. She decides to use it to summon Naruto. Once Naruto arrives, they face a powerful enemy that is threatening Raven's world. They combine their powers, Naruto's Rasengan and Raven's dark magic, to defeat the enemy.

In Naruto fanfiction, some of the often - considered most powerful summons are the Ten - Tails. It's an extremely powerful and ancient being. Another could be the Sage of Six Paths' summon, if there is such a concept in certain fanfictions. These are usually depicted as having near - god - like powers and can change the course of battles completely.

The Snakes, especially those related to Orochimaru's summons, are often used in fanfiction. They can bring an element of mystery and danger. Some fanfictions might explore the idea of a redeemed snake summon that helps Naruto in his quests, or a more powerful, ancient snake that was hidden away until now.