Maybe Naruto creates the robot army as a way to bridge the gap between the ninja villages. He uses them for peaceful purposes like construction and rescue operations at first. But then, a rogue group tries to steal the robots and use them for evil, so Naruto has to fight to protect his creation. Well, in this fanfiction, the robots could be powered by chakra, which gives them an interesting twist. They might also be able to learn ninja techniques from Naruto and the other ninjas, making them a formidable force not just in terms of brute strength but also in combat skills.
Perhaps in the fanfiction, the robot army is a result of some mad scientist's experiment in the Naruto universe. Naruto and his friends have to figure out the weaknesses of these robots, which could be related to chakra or some specific ninja techniques. They might also encounter some robots that can copy ninja abilities, adding more challenges to the story.
One possible plot could be that Naruto, after becoming Hokage, decides to form an international army to combat a new and powerful threat that endangers all the ninja villages. This army would consist of ninja from different villages who have put aside their old rivalries under Naruto's leadership.
Perhaps it's for exploration. Naruto is always curious about the world outside. The robots can be sent to explore dangerous or uncharted areas where it might be too risky for humans to go. They can collect information and report back to Naruto.
Maybe Naruto has some knowledge from an unexpected source. For example, he could have met a wandering inventor who taught him the basics of robotics. With his determination and quick learning ability, he then starts building the robot army. He might also use his chakra in some unique way to power or control the robots.
It could be Orochimaru. He's always been into strange experiments. He might create a robot army to get revenge on the village or to prove his superiority.
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.
In a 'naruto droid army fanfiction', perhaps the droid army is sent from a far - off land or dimension. They are programmed to capture the tailed beasts. Naruto, along with his friends, must find a way to stop them. They could start by studying the droids' weaknesses and formulating a plan. It could be a story full of action and adventure as they battle these mechanical menaces.
Well, it could be about Naruto forming an alliance with a demon army. Maybe they come together to fight a common, greater evil that threatens the ninja world. The demons might have unique powers that Naruto and his friends need to learn to use effectively in battle.
Sakura could be a leader. She has strong medical ninjutsu skills and is also a very capable fighter. She could lead the medical unit in Naruto's army, taking care of the injured and also providing strategic advice based on her intelligence. Another possibility is Shikamaru. He is known for his brilliant strategic mind. He could be in charge of planning the army's movements, setting up traps, and devising battle plans to outwit the enemy.
One possible plot could be that Naruto is on a mission in a mysterious land and stumbles upon the Golden Army by accident. Maybe he initially mistakes them for some kind of powerful jutsu - created constructs. As he tries to figure out what they are, he discovers their unique powers and abilities. He then has to decide whether to use them for the good of his village or leave them be as they might be a dangerous unknown force.