He might be intrigued.
He could be critical. Since he is from his own world with his own set of rules and power dynamics, he may find some parts of the fanfiction不符合逻辑 (illogical) and not in line with what he believes is possible. However, he may also find some parts that are really engaging and make him want to explore more of the Death Battle fanfiction world.
He might be shocked. The fanfiction could show his friends or himself in situations that are completely different from what he knows. For instance, if it shows him losing to a minor villain, it would be very unexpected for him.
He would probably be shocked. The fanfic might have some very different takes on combat and characters that he's not used to.
Iida would probably be very vocal about any inappropriate or unethical content in the fanfiction. He has a strong sense of justice and propriety, so if there are any elements that go against his values, he would not hold back in expressing his disapproval.
He might be confused at first. Goku is used to his own real - life battles, and fanfiction can be really wild with all kinds of crazy scenarios.
Ryuk would probably just be amused. He is a Shinigami who has seen a lot in his existence. Fanfiction is just another strange human creation to him. He might chuckle at some of the more outlandish ideas in the fanfictions, like a character having superpowers beyond the Death Note.
The Jedi Council would have a mixed reaction. On one hand, they might appreciate the creativity that goes into the concepts in Death Battle fanfiction. However, on the other hand, they would be highly alarmed if these concepts violate the core tenets of the Jedi Order. For example, if a fanfiction presents a Jedi as being power - hungry rather than selfless, they would see it as a perversion of what a Jedi should be. They might even feel a sense of responsibility to set the record straight, if possible, about what it truly means to be a Jedi.
In the Super Smash Bros community, reactions to Death Battle fanfiction would vary widely. There are fans who love exploring different interpretations of the characters, and they might embrace the wild and crazy ideas in Death Battle fanfiction. These fans might share and discuss the fanfictions, creating a sub - community within the larger Smash Bros fanbase. On the other hand, there are more conservative fans who prefer the official Smash Bros canon. They might view Death Battle fanfiction as something that doesn't belong in the Smash Bros world and might even actively avoid it.
I often find that the best death battle fanfiction are the ones that not only focus on the fight itself but also explore the characters' emotions and motivations. It adds depth to the story. Like, a character's reason for entering the death battle could be more than just for power or glory, it could be for revenge or to protect someone they love.
Naruto, being the energetic and battle - loving guy he is, would likely be on the edge of his seat, eager to see who comes out on top in each death battle. He might be making bets with himself about the outcomes. Hinata, with her gentle nature, would be a bit more subdued. However, she would also be intrigued. She might be more concerned about the safety of the fighters, even though it's just a fanfiction battle. And when a fight gets really intense, she might clutch Naruto's arm without realizing it, while Naruto is too engrossed in the action to notice at first.
They would probably have a lot of discussions. Aang might start by asking others what they think about a particular fight in the fanfiction.