Goku's powers would be a shock to the Naruto world. His super strength that can break mountains and his speed that is faster than the eye can see would make the ninjas reevaluate their own power levels. His powers would likely be the subject of much discussion among the ninja clans. Some might try to find ways to replicate his powers using chakra, while others would simply be content to have him on their side in battles against common enemies.
His powers would likely be seen as very strange. The Naruto characters are used to chakra - based abilities, so Ichigo's spiritual powers would be a novelty.
His powers would be seen as extremely powerful and exotic. The ability to create multiple clones and use chakra - based attacks would be something completely new to the UA students and teachers.
His powers would probably be seen as very strange. The DBZ characters are used to ki - based powers. Naruto's chakra and jutsu would be something they've never encountered. They might initially think it's a weak form of energy. But once they see what Naruto can do with his shadow clones and powerful attacks like the Rasengan, they'd start to take him more seriously.
His powers would likely be seen as extremely strange and powerful. The people of Westeros have never seen anything like chakra or ninja techniques. They might think he's a sorcerer or a god sent to disrupt or save their world.
His powers would be seen as extremely unique. Naruto's chakra - based abilities are very different from quirks. People in MHA would likely be both amazed and a bit intimidated. His ability to create hundreds of clones would seem like a super powerful quirk on its own.
Naruto's powers, like the Rasengan and his ability to summon toads, would be seen as very unique. The Fairy Tail wizards would be both amazed and a bit confused at first. Itachi's Sharingan would be considered extremely powerful and perhaps a bit terrifying. His genjutsu abilities might be mistaken for some kind of dark magic at first. But once they understand that Naruto and Itachi are on their side, they would be respected for their powers.
In the Grand Magic Games in fanfiction, Naruto's powers would likely be a source of both confusion and fascination. Some might view his chakra - based attacks as a new form of magic. Others may be intimidated by his raw power and his ability to quickly move and strike.
Goku's powers are on a much higher scale. His ability to destroy planets as a Super Saiyan makes him far more powerful than Naruto at his strongest. Naruto's jutsu are mainly focused on the ninja world, while Goku's powers are universal.
His powers would be seen as extraordinary. The Rasengan alone would be a very powerful and unheard - of jutsu at that time.
In Marvel fanfiction, his powers could be a source of envy for some characters. For instance, characters like the Hulk might see Superman's more controlled strength as something to strive for. At the same time, Superman's heat vision and X - ray vision would be completely new abilities in the Marvel world and would be both feared and respected.