His mobility would be enhanced. He could fly around like Green Lanterns do, which is a huge change from his normal ninja running and jumping. He could also use the ring to create shields, protecting himself from attacks that his ninja gear might not be able to handle.
With the Green Lantern ring, Naruto's leadership abilities could also be affected. In the Naruto world, he is already a leader. But the ring might give him a broader perspective. He could inspire not only his ninja comrades but also potentially other beings in the universe. His willpower - based powers from the ring could be used to boost the morale of his friends and allies during tough battles, making him an even more important figure in the world of fanfiction.
Naruto's perception abilities might improve. The Green Lantern ring gives the user access to a lot of information. He could use this to detect enemies more easily, similar to how he uses his sage mode to sense chakra. Also, his ability to communicate and connect with others could be different. He might be able to use the ring to communicate across long distances, which would be useful in both his ninja world and in any Green Lantern - related scenarios.
His combat style would change drastically. Instead of relying solely on ninjutsu, he'd be using the powers of the Lantern Ring. For example, if he had a Blue Lantern Ring, which is associated with hope, his attacks would be filled with a sense of optimism and might even inspire his comrades in battle more than before. His enemies would be facing a very different Naruto, one with powers that they may not have any prior knowledge of how to counter.
His physical abilities would likely be enhanced. Red Lanterns have increased strength, speed, and durability. Naruto already has great physical prowess as a ninja, but as a Red Lantern, he could become even stronger. His ninjutsu might also change. For instance, his rasengan could be infused with red energy, making it more powerful.
Naruto's personality would adapt to fit the new role. His existing positive traits like his courage and his ability to make friends would help him in the Green Lantern Corps. He'd be more of a team player perhaps, learning to work with beings from all over the universe. His impulsive nature might still be there, but he'd learn to control it better with the discipline that comes with being a Green Lantern. And his overall goal would shift from becoming Hokage to being a great Green Lantern and protecting the cosmos.
Naruto's character would gain a new sense of responsibility. As a Green Lantern, he'd have to abide by the Corps' rules and uphold justice on a much larger scale. This might make him more serious at times, but his core of being a fun - loving and determined person would still remain. He'd also learn to work in a team with other Green Lanterns, which could be different from his experience with his ninja teams as they come from diverse backgrounds.
Well, Naruto with a Green Lantern ring could be extremely powerful. His strong willpower, which is a key factor for using the Green Lantern ring, would be amplified. He could create constructs based on his ninja skills and the chakra system. For example, he might form giant rasengan constructs to attack his enemies. Also, his sense of justice, which he already has in the Naruto world, would align well with the Green Lantern Corps' ideals.
Well, if Naruto had a Green Lantern ring, he would be extremely powerful. His already formidable willpower from his ninja training would be amplified by the ring. He could create constructs of his shadow clones, or use the ring's energy to enhance his Rasengan. It would be a whole new level of combat for him, combining the powers of the ninja world with the abilities of the Green Lantern Corps.
His water - based jutsu might improve. Since Kiri is known for its water ninjutsu, Naruto could learn new techniques or modify his existing ones. For example, he could combine his Rasengan with water chakra to create a more powerful and water - enhanced attack.
In a Themiscyra fanfiction, Naruto's shadow clone jutsu could have an interesting transformation. Maybe the clones could take on some Amazonian characteristics, like their armor or weapons. His rasengan could also be modified. For instance, it could be charged with the magic energy of Themiscyra, making it not only a powerful physical attack but also having some sort of magical effect, like being able to dispel dark magic or heal minor wounds in addition to causing damage.
He would probably gain new and powerful abilities. The Lantern Rings in the DC universe are known for granting unique powers based on the emotional spectrum. If Naruto got one, say a Green Lantern Ring which is powered by willpower, his already strong determination would be super - enhanced. He could create constructs like he does with his shadow clones but on a much grander and more powerful scale.