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.
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.
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.
If Naruto was raised by Slenderman in fanfiction, his abilities would change drastically. His chakra control might be influenced by Slenderman's otherworldly energy. He could gain the ability to manipulate the environment in a more spooky way, like making the air feel cold and heavy around his opponents. Also, his Rasengan might take on a different form, perhaps with a dark, swirling energy around it.
His physical abilities would likely improve greatly. Whis could train Naruto to have better speed, strength, and agility, much like how he trains Goku and Vegeta in Dragon Ball. Naruto might also gain the ability to sense ki, which would give him an extra sense in battle.
His physical strength might increase. Dwarves are often depicted as strong, and living among them could mean Naruto has to do a lot of physically demanding tasks like mining or lifting heavy objects. So, he'd likely have more brute force.
His abilities would likely become more brutal. The Espada are known for their raw power and direct combat styles. Naruto might not develop his signature jutsu like the Rasengan in the same way. Instead, he could focus more on melee combat and dark - based energy attacks similar to what the Espada use.
Naruto's abilities would change significantly. Ichigo has unique spiritual powers, and through his training, Naruto might develop a form of 'spiritual chakra'. His ninjutsu could become more powerful as he combines the new understanding of energy with his existing chakra control. Also, Naruto's combat strategy would shift as he learns from Ichigo's more direct and aggressive fighting style.
He might gain the ability to transform like Saiyans do. This could give him different power levels and appearances during battles, making him a more versatile fighter.
His abilities would likely become more focused on close - range combat and self - preservation. Hidan is good at getting up close and personal in a fight, so Naruto might develop similar skills. Also, he could learn some of Hidan's unique techniques related to his immortality, although it's not clear if Naruto could fully replicate them. But overall, his combat style would be less about flashy long - range attacks and more about brute force and survival.
His speed and strength could be used to better navigate the Pokemon world and catch Pokemon more easily.