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.
Another plot could revolve around the relationships between the existing legendary summons. Maybe there's a power struggle among them, and Naruto has to step in and mediate. He could learn about their ancient rivalries and use his skills to bring them together to face a common foe like a powerful, ancient evil that has been awakened.
One way is to focus on the emotional aspect. Show Naruto's reasons for neglecting them, like maybe he's afraid of the power or has some unresolved issues with the summoners. For example, if he has a falling - out with the toads, it can lead to him avoiding summoning them.
In fanfiction, if Naruto neglected the legendary summons, one consequence could be a weakened alliance. For example, the toads could have withdrawn their support, making Konoha more vulnerable to attacks. Since they are powerful allies, their absence would be a significant blow.
The female Nekomata is also quite popular. With her cat - like features and agility, she can be a great asset in battles. She may have the ability to move silently and ambush enemies. In fanfiction, she often forms an interesting relationship with Naruto, teaching him new ways to fight and be stealthy.
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.
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.
In some Naruto fanfictions, powerful and ancient shinobi clans are the ones who can perform the most powerful summons. The Hyuga clan might be able to summon a celestial deer that can see the future and use its antlers to deflect any attack. The Aburame clan could summon a swarm of super - intelligent bugs that can form complex formations and attack the enemy's chakra system directly. There are also cases where new, original characters in fanfiction are the only ones capable of the most powerful summons, which usually involves some sort of unique backstory or special power they possess.
Arceus is quite popular. Given that it's considered the creator of the Pokemon universe in the official lore, it often has a significant role in fanfictions. Mewtwo is also very common. Its powerful psychic abilities and complex backstory make it a favorite for fanfic writers to explore. Another popular one is Lugia. With its majestic appearance and its connection to the sea, it's often a central figure in many stories.
Often, characters who are hybrids of different bloodlines tend to be popular. For instance, a character who is part Uzumaki and part Senju could be really interesting as they would potentially have access to both the Uzumaki's life - force and sealing abilities, as well as the Senju's natural affinity for all types of ninjutsu.
Naruto himself is obviously a must - include. His journey from an outcast to a hero is full of potential for new stories. Sasuke is also very popular. His complex personality and his search for power make for great plotlines. Sakura can't be left out either. Her growth as a kunoichi and her relationship with Naruto and Sasuke are always interesting to explore.