Sesshomaru could also be a very powerful character in this crossover. He has his own powerful sword, Bakusaiga, and his inhuman strength and speed. He is very experienced in combat against demons. Compared to Naruto's friends like Sakura, Sesshomaru would likely be much more powerful in terms of raw strength and combat ability. But Sakura has her own medical ninjutsu and superhuman strength when she releases her inner power, which could also be useful in different situations.
It's hard to say for sure. Naruto in his Sage Mode or with the power of the Nine - Tails is extremely powerful. He has a vast amount of chakra and can perform powerful jutsus. However, Inuyasha with his Tessaiga, especially when it's in its upgraded forms, is also a force to be reckoned with. He has superhuman strength and speed, and the Tessaiga can cut through almost anything. But if we consider all aspects, Naruto might have an edge as he can use a wider variety of techniques and has more experience in large - scale battles.
In my opinion, Aizen could be one of the most powerful characters in such a crossover. His intelligence and his ability to manipulate others are already very dangerous in the Bleach universe. If he were to enter the Inuyasha world, he could easily use his wits to turn the different factions against each other. He could also potentially find a way to use the demon energy for his own gain. His Zanpakuto's powers are also very versatile and could give him an edge against the characters in Inuyasha's world.
It's really hard to say. Naruto in his strongest form, like when he has the power of all the tailed beasts, is extremely powerful. He has incredible strength, speed, and the ability to use a vast array of jutsu. However, Aang in the Avatar state has access to all four elements and can be a formidable opponent. If we consider the Avatar state's spiritual connection, it could give Aang an edge in a battle of wills.
It's a tough call, but it could be Light. If he manages to get his hands on the knowledge of the Inuyasha world and its rules, he could use the Death Note very effectively. He could target demons by learning their names, and since many demons in the Inuyasha world are vulnerable to human - like weaknesses in some ways, his strategic mind could make him a very powerful force. He could even manipulate some of the human characters in the Inuyasha world to do his bidding.
One common theme is the clash of different cultures. Naruto's world is more about ninja villages and modern - ish (for a fantasy world) structures, while Inuyasha's is a feudal era world. So when they cross over, there's often exploration of how these different cultures interact.
It's likely that Naruto himself would be one of the most powerful. His ability to use chakra and his various jutsu like the Rasengan would give him an edge in combat. He also has the Nine - Tails' power which could be a game - changer.
Well, Erza is a very strong character in Fairy Tail. She has a vast array of armors and combat skills. However, in a crossover, Sasuke could be a real contender for the most powerful. His Sharingan gives him amazing abilities like predicting moves and copying techniques. And his Rinnegan in later arcs makes him even more formidable. But then again, characters like Gildarts from Fairy Tail are also extremely powerful with their unique magic. So it really depends on how the crossover is written and what abilities are emphasized.
It's hard to say for sure, but Naruto would be a top contender. His ability to use the Nine - Tails' power, along with his Sage Mode and Rasengan techniques, make him extremely formidable. Plus, his experience in battles and his never - give - up attitude would give him an edge. However, All Might with his One For All at full power is also incredibly strong. His physical strength and combat experience in the My Hero Academia world are second to none.
It's really hard to say who would be the most powerful. On one hand, in Fate Stay Night, Servants like Gilgamesh have incredible power. His Gate of Babylon contains countless noble phantasms. But in the Naruto world, characters like Naruto in his Six Paths Sage Mode are also extremely powerful. He has the power of the tailed beasts and can use all kinds of powerful jutsu. However, if we consider a crossover, it might be someone who can combine the powers from both worlds. For example, if a mage from Fate could learn to use chakra and combine it with their magic, they could be very powerful. Or if Naruto could somehow gain the abilities of a Servant, like the ability to use noble phantasms, he would be unstoppable.
Inuyasha's demon blood could interact with Naruto's Nine - Tails chakra. Since both are sources of great power, they might be able to create a unique power - up. Inuyasha could use the Nine - Tails' chakra to boost his speed and strength even further, while Naruto could learn from Inuyasha how to better control his inner 'demon' side. Their combined power could be used to break through powerful barriers or defeat extremely strong foes.