He might get angry if he sees himself being misrepresented in the fanfic. For example, if the fanfic makes him out to be a much weaker character than he actually is or if it twists his moral code in a bad way. But on the other hand, he could also find it hilarious and just enjoy it as a strange form of entertainment from another world.
Well, he might be really confused at first. Death Battle fanfic often has really out - there match - ups and scenarios that don't exist in his world. He could be intrigued by the different power - level interpretations and the creative battles that the fanfic writers come up with.
Naruto might also start comparing the battles in the fanfic to the battles he has actually fought. He could be thinking about how different the strategies are, how the power - ups work in the fanfic compared to his own experiences with things like Sage Mode or the Nine - Tails' chakra. He might even pick up some new ideas for his own fighting style, or at least be inspired to train harder to prove that he's stronger than what the fanfic portrays.
One possible scenario is that Anakin might get inspired by the unique battles and combat strategies depicted in the fanfiction. He could start thinking about how he would handle those situations in his own way, given his skills as a Jedi and later as Darth Vader.
Perhaps Anakin would find the fanfiction to be an interesting diversion from his own experiences. He might see characters in the Death Battle fanfiction with powers similar to his own and compare their uses of power. For example, if there were a character with a lightsaber - like weapon, he'd analyze how they fought compared to his Jedi training. He could also be intrigued by new and strange powers that don't exist in his world.
One possible scenario could be Naruto and Hinata being shocked by the unexpected match - ups in the death battles. Maybe they'd be cheering for their favorite characters or be completely baffled by some of the outcomes.
In such a fanfiction, one possible scenario could be that Naruto sacrifices himself to save Konoha from an ultimate evil. Maybe a powerful enemy like Kaguya returns in a more menacing form and Naruto, seeing no other way, uses all his power and gives his life to seal the threat away.
Well, Sakura might be staring at the sky because she's feeling a bit melancholic or just enjoying the view. As for Sasuke watching fanfic, it could be that he's curious about how others perceive his character. He may be comparing the fan - created stories to his own real - life experiences.
Maybe Spiderman gets some new combat ideas. He could see some unique fighting styles in the Death Battle fanfiction and incorporate them into his own superhero battles.
One possible scenario could be Naruto exploring new jutsu by experimenting on his own chakra. Maybe he tries to combine different elemental chakra within himself in unorthodox ways to create a super powerful and unique jutsu. Another could be related to his physical endurance. He might experiment with training methods that push his body to the limit, like enduring extreme pain or fasting for long periods while still trying to perform at his best in combat simulations.
One possible scenario could be that he succumbs to the hardships in the village as a child. Maybe the villagers' hatred towards him is too much to bear, and he gets into a situation where he can't defend himself. Another could be that he's on a mission early on and it goes horribly wrong, perhaps facing an enemy far too powerful for his young self.
Well, the characters might be really surprised. For example, Bakugo would probably be yelling about how inaccurate some of the battles seem. He's so competitive that he might think some of the power match - ups are just wrong. Midoriya, on the other hand, would be taking notes and analyzing how different characters' powers are portrayed compared to his own understanding of power dynamics.
One possibility is that Chloe discovers new perspectives on the 'Life Is Strange' story through fanfiction. Maybe she finds alternative endings or character developments that make her view the game's world differently.