Yes, it likely exists. There are fanfiction for all sorts of combinations in the world of fandoms. Since both Spiderman and Death Battle are popular topics, it's very possible that someone has written fanfiction that combines the two, and Spiderman could be depicted as reading or being involved with such fanfiction within that fictional story.
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.
Well, it can show different versions through the eyes of the fan. For example, a fanfiction could have a version of Spiderman who has a different suit, like one made entirely of nanotechnology that can transform into different shapes. The encounter between the real Spiderman and this fan - created version could explore how different looks can affect the perception of the hero.
Spiderman's reaction could be complex. He might start by being intrigued by the idea of fanfiction in general. As he reads the 'Spiderman Homecoming' fanfiction, he might be impressed by the attention to detail some fans put in. He may also be a bit embarrassed if there are overly sappy or romantic interpretations of his character. At the same time, if there are fanfictions that show him in a negative light, he might feel the need to defend himself, but overall, he'd probably see it as an interesting part of his popularity and the fans' creativity.
Spiderman would probably be really confused at first. I mean, Deadpool is not your typical villain. He'd likely try to talk Deadpool out of whatever crazy plan he has. He'd be using his quick wit and trying to reason with Deadpool, saying things like 'This is not the right way to do things, Deadpool.'
Perhaps in the fanfiction, a young Spiderman fan who has a special power he doesn't know about yet meets the real Spiderman. They both have to figure out how to use the fan's power to stop a group of criminals who are stealing tech from Oscorp. This would involve a lot of character development for the fan character as he discovers his abilities with Spiderman's guidance.
No, 'Overwatch' is a game, it doesn't have the ability to 'watch' fanfiction. Fanfiction is written by fans for fans to read, and while the developers of Overwatch might be aware of fanfiction, the game itself doesn't engage with it in the sense of 'watching'.
For the free watches, it could be a promotion by a watch company trying to target the fanfiction community. But finding it might be a challenge. As for the 50% off fanfiction, some independent fanfiction publishers might offer such a deal on their premium content, if there is any. But it's not something you'll see every day.
Yes, it's possible that fans of 'bleach' watch fanfiction. Fanfiction often provides alternative storylines, character developments, and scenarios that can be really appealing to fans. They might watch it to see different interpretations of their favorite 'bleach' characters and plots.
I'm not entirely sure where you can get free watches and 50% off on fanfiction specifically. However, some fanfiction platforms might have occasional sales or promotions. You could check popular fanfiction websites like Archive of Our Own (AO3), but they mainly operate on donations rather than having such direct discounts. Maybe look for community announcements on those platforms or related fan forums.