Naruto's chakra - based abilities would probably be combined with Deathstroke's combat skills. For example, he could use his Rasengan while also making quick, precise slashes with swords like Deathstroke. His ability to sense chakra could be enhanced in a way that mimics Deathstroke's heightened senses in combat.
Well, Naruto's shadow clone technique could take on a new form. Instead of just being used for distraction or mass - attack, he could use the clones more strategically like Deathstroke uses decoys. The clones could be made to look more like Deathstroke's illusions, confusing his enemies even more. Also, Naruto's speed and agility, which are already high, could be refined further to match Deathstroke's lethal efficiency in battle.
Naruto's ability to use chakra could be combined with Deathstroke's physical combat skills. For example, Deathstroke could learn to sense chakra from Naruto and use it to anticipate his opponents' moves better. Naruto, on the other hand, could learn Deathstroke's efficient killing techniques and incorporate them into his ninja attacks in a non - lethal way.
If Naruto is trained by Deathstroke in fanfiction, his character would change in multiple ways. For one, he might lose some of his naivete. Deathstroke's world is a harsh one, and Naruto would have to adapt. He could become more calculating and less likely to jump into a fight without thinking. His relationships with his friends might also change. He might start to keep them at a bit of a distance, not wanting to put them in danger as a result of his new, more dangerous fighting style.
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.
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.
Well, one possibility could be that Naruto, influenced by Kurama's knowledge or some strange magic, starts to admire Deathstroke's combat skills. So he might try to incorporate some of Deathstroke's fighting tactics into his own ninja style. For example, Deathstroke is known for his precise and calculated strikes, which Naruto could adapt to his Rasengan attacks to make them more effective.
In this fanfiction, Naruto's abilities would change significantly. Firstly, he'd be exposed to Kumogakure's unique jutsu. He might learn more advanced lightning - style techniques which are prevalent in the Cloud Village. His combat style would be more brute - force - oriented, as the Raikage values strength. Also, his ability to lead and make strategic decisions would be molded by the Raikage's military - minded approach. He might not rely as much on his Uzumaki heritage in the beginning, but as he grows, he could find a way to combine the Raikage's teachings with his own innate abilities.
He'd probably be better at stealth. Haku was a master of it. Naruto might also have an earlier start with water - based jutsu and could potentially develop some ice - like jutsu similar to Haku's.
In fanfiction, the fusion can completely transform Naruto's abilities. Firstly, his chakra control could reach a whole new level. With the Kyuubi's chakra, which is vast and powerful, he could perform long - range and large - scale attacks more easily. His ability to sense danger and opponents would also improve. The Kyuubi's instincts might add to Naruto's natural senses, making him more aware of his surroundings. Moreover, Naruto might gain the ability to transform into a more powerful form that combines his human features with some of the Kyuubi's characteristics, like having fox ears or a tail while still maintaining his humanoid shape, which would give him additional advantages in combat, such as better balance and agility.
His combat abilities would change a great deal. He'd likely be more proficient in close - range combat due to learning the Hyuuga's Gentle Fist. This would give him an edge in battles where quick, precise strikes are needed.