His powers would likely be adjusted to fit the magical nature of the DxD world. For example, his chakra might be seen as a form of unique magic. His jutsus could be enhanced or modified by the different energies present in DxD.
Naruto's ability to use the Nine - Tails' chakra could turn into something like having a powerful spiritual beast companion in the Bleach world. Hinata's Byakugan could be enhanced to see spiritual auras more clearly and detect hidden spiritual threats. Their powers would also be influenced by the fact that they are now in a world with Shinigami, Hollows, and Quincy. They might learn new techniques from the Bleach characters and combine them with their own unique abilities.
His powers might adapt to the more urban environment. His chakra control could be used in different ways, like using it to jump between tall buildings more easily.
His powers might adapt to the urban environment. His Shadow Clone Jutsu could be used for distraction during heists or when facing gangs. For instance, he could send clones into different alleys to confuse the criminals. His ability to sense chakra might be tweaked to sense danger or the presence of super - villains in Gotham. Maybe it would work like a sixth sense for him in this new setting.
His powers might adapt to the new environment. For example, his chakra control could be used in different ways. Instead of just for ninjutsu, it could be used to enhance his physical abilities in a way that's more relevant to the battles at Beacon.
His powers might be enhanced by Stark technology. For example, his ability to control water could be used in more precise ways with the help of Stark - made gadgets.
If Naruto was in a WoW fanfic, his powers would likely be adjusted to fit the game's mechanics. His shadow clones could be more like summoned minions in WoW. They could have different abilities based on the skills he acquires in the WoW world. His ability to sense danger, which is related to his ninja training, could be translated into a form of danger perception in WoW, helping him avoid traps and enemy attacks more effectively.
Well, Naruto's powers are mainly centered around his chakra control and the unique jutsus he has learned. In High School DxD, the powers are often related to sacred gears or devil abilities. If Naruto were to enter this world, his chakra might be seen as a new type of energy source. His ability to summon toads could be a huge advantage in certain situations. For instance, if he were in a fight against a powerful devil, he could summon Gamabunta, who could cause chaos and distraction. On the other hand, the devils' powers of illusion and teleportation could pose new challenges to Naruto, forcing him to adapt his combat style. His Rasenshuriken, which is a highly destructive jutsu, might be able to break through some of the stronger defenses in the DxD world.
Naruto's character would likely become more resourceful. In the goblin world, resources might be scarce compared to what he was used to in Konoha. So he'd have to learn to make do with less. Also, his sense of community might shift. He'd be part of a goblin community which has different values than the ninja village, and he'd have to balance his old values with the new ones of the goblins.
Naruto might become a bit more reserved at first. Since Tsuna's world is different from Naruto's, he'd have to adapt. But his core of being kind - hearted and determined would remain. He might be more cautious as Tsuna initially isn't as bold as Naruto was in his own world.
Naruto's personality would be a blend. He'd keep his core values like loyalty and his love for his friends. However, being in Cell's body, he'd have to adapt. He might become more reserved in some ways because Cell wasn't as open as Naruto. But he'd still find ways to show his Naruto - ness, like when it comes to facing challenges head - on and never giving up. He'd also have to handle the power - hungry side of Cell's nature, but he'd probably try to turn it into a drive to protect rather than conquer.