Well, one possibility could be that Tails is forced to become a robot against his will. Maybe an evil scientist captures him and turns him into a robotic servant. He could then struggle to regain his free will and his original form. He might use his mechanical skills, even in his robotic state, to outwit the scientist and find a way to reverse the process.
The fanfiction could start with Tails being curious about robotics and accidentally getting involved in an experiment that goes wrong, turning him into a robot. As a robot, he has to deal with the fact that he no longer has the same physical sensations. He can't feel the wind through his fur or the warmth of the sun. His friends try to comfort him, but he feels like an outcast. However, he soon discovers that being a robot gives him unique advantages in combat and problem - solving, which he uses to save his friends from a dangerous situation, and ultimately they find a way to turn him back.
If Tails becomes a robot in a fanfiction, his personality might become more logical and less emotional. Since robots are often programmed to be rational, he might start to analyze situations more coldly. For example, he might not be as quick to jump into a rescue mission out of pure compassion like he used to.
Well, one possibility is that Naruto is turned into a robot by some kind of advanced jutsu gone wrong. He might then struggle to adapt to his new mechanical form. For example, he could find it hard to perform his regular ninja moves in the same way. Maybe he would initially be rejected by his friends until they realize his inner self is still the same Naruto they know and love.
The plot might develop with Tails initially feeling despair over his paralysis. Then he could gradually start to find hope. His friends would encourage him, and they could all work towards a cure or a better way for Tails to live with his condition.
One interesting Robot Tails fanfiction could be about Tails building a super - advanced robot version of himself to help Sonic in a particularly tough battle. In this story, the robot Tails has unique abilities like flight speed faster than the original Tails and advanced weaponry built into his tails.
In a 'Tails Turns into a Robot' fanfiction, it could be that an ancient technology is accidentally activated by Tails. This technology fuses with him and turns him into a robot. He then discovers that he has a special connection to an ancient robotic civilization. He has to navigate his new identity, learn about this civilization, and decide whether to embrace his robotic self or try to find a way back to his normal form all while facing challenges from those who fear or want to use his new - found powers.
Well, in a fanfiction where Naruto becomes the zero tails, it could open up a whole new world of storytelling. The zero tails has a mysterious origin and nature. Naruto's transformation into it could mean a shift in the power balance in the Naruto universe. His relationships with other characters like Sasuke and Sakura would also be affected. For example, they might be initially afraid or suspicious of his new form. And Naruto himself would need to learn how to use the zero - tails' power for good, perhaps by finding a way to combine it with his existing values and ninja skills.
Well, one place to look for such fanfiction could be FanFiction.net. There are often many Sonic - related fanfics there. Maybe search for 'Tails turns into a robot' directly in the search bar on the site. Another option is Archive of Our Own (AO3). It has a large collection of fan works as well, and you might find some interesting takes on Tails becoming a robot in the Sonic universe.
Perhaps in this fanfic, Naruto becoming the Nine - Tails means that he has to face a new set of challenges related to his identity. He has always been Naruto Uzumaki, the boy with the Nine - Tails inside him. But now, being the Nine - Tails, he might question who he really is. Is he still Naruto, or has he become something entirely different? This internal struggle could be a major part of the story, while he also has to deal with external threats who see him as a new and dangerous force.
Well, in 'tails becomes paralysed fanfiction', it could lead to a story of Tails' inner strength. Despite being paralysed, he could start to explore new ways of using his intelligence. Maybe he invents some special devices to help him move or interact with the world again, showing his resilience.
First, come up with an interesting concept. It could be something like 'What if Robot Tails became a teacher to young animals in Sonic's world?' Then, create a basic plot outline. Decide on the beginning, middle, and end of your story.