Rather than looking for such improper fanfic, it would be better to explore fan - created works that are based on the Scarlett Witch's character in a positive, non - sexual way, such as her powers, her relationships in a non - sexual sense, and her role in the Marvel universe.
No. Such fanfiction involving sexual content between characters is inappropriate. It goes against the family - friendly nature of the original characters and the general standards of good taste in fan communities. These characters are often aimed at a wide range of audiences including children and young fans, and creating sexual fanfiction about them is not acceptable.
Yes, there might be some good ones out there. You could start by looking on popular fanfiction websites like Archive of Our Own. There are often many different takes on pairings in fanfiction, and with Percy and Scarlet Witch, it could be an interesting mix of different universes and character traits coming together.
Another way is to explore a friendship between them. Maybe Spiderman could offer Scarlett Witch some advice on dealing with the public perception of her powers, as he has experience with being both a hero and having a secret identity. Or they could just have a conversation about their different origins and how that shapes their views on being a hero.
You could also try FanFiction.net. There are a lot of different fanfictions there as well. However, the tagging system might not be as refined as Archive of Our Own, so you might need to do a bit more sifting through the results to find what you're looking for in terms of Percy and Scarlett Witch fanfiction.
One appropriate topic could be her training and how she hones her powers. For example, a fanfic could detail her journey to master a new aspect of her magic, like telekinesis on a grander scale.
In the 'rwby tai vs raven fanfic', it might focus on the backstories that led them to this point of conflict. Tai might be fighting for the sake of his family or his ideals about protecting Remnant. Raven, on the other hand, could be in the fight for her own self - interest or to protect secrets she holds. The fanfic could also show how their relationship, whether it was once friendly or always strained, affects the way they fight each other.
Perhaps a plot twist would be that during the fight, Tai discovers a secret about Raven that completely changes his perception of her. For example, he finds out that she has been working undercover to stop a greater threat all along, and their fight then turns into a reluctant alliance against a common enemy.
They could start off as friends who are just getting to know each other again in their 17 - year - old selves. Then gradually, through shared experiences like going to school dances or studying together, their relationship can turn into something more romantic.
Scarlett Johansson has no role in Pulp Fiction. Pulp Fiction has its own distinct cast, and Johansson is not part of it. If you were thinking of other movies she's been in, like Lost in Translation, that's a different set of works.