One possible plotline could be that Peter Parker and Jill Valentine are brought together by some kind of multiverse event. They then have to team up to fight a common enemy that threatens both their worlds. For example, a new villain who has the ability to spread a virus in Peter's world and summon zombies in Jill's world.
Another plot could be that Jill Valentine is somehow transported to Peter Parker's New York. She gets involved in the superhero drama there, and Peter is initially suspicious of her but then realizes she's a capable fighter. As they work together to keep the city safe, feelings start to develop between them. Their different combat styles - Peter's acrobatic and web - slinging vs Jill's more gun - based and tactical - could also make for some interesting action scenes in the fanfic.
You could also try Archive of Our Own (AO3). It has a great tagging system. Just search for 'Peter Parker' and 'Jill Valentine' in the search bar, and it'll show you all the relevant fanfics. Some of them might be really creative, exploring different scenarios where these two characters from different universes interact.
One possible plotline could be that Elsa, with her ice powers, somehow ends up in Peter Parker's world. Maybe she's on the run from some threat in her own realm and Peter, being the friendly neighborhood Spider - Man, decides to help her. They could form a bond as they both have secrets to keep - Elsa with her powers and Peter with his identity as Spider - Man.
A possible plotline could involve their combined powers. They might use their abilities in unique ways to protect their family or the community they live in. It could also be about how they balance their public and private lives, especially since they both have extraordinary abilities.
One possible plotline could be that Peter Parker gets sick with a mysterious illness that even his enhanced healing can't quickly fix. Dr. Bruce Banner, with his scientific expertise, tries to find a cure. Along the way, they bond over their shared experiences of being different and having to deal with the consequences of their powers.
One possible plotline could be Peter struggling to communicate his superhero identity and his daily life challenges to his friends and family without using his voice. Maybe he has to develop a unique sign language or other non - verbal communication methods.
One possible plotline could be them dealing with the challenges of impending parenthood while also trying to keep their superhero/vigilante lives a secret. Another could be that they face opposition from their respective allies or enemies who don't approve of their relationship or the pregnancy.
A plotline might be centered around a misunderstanding. For instance, Starfire's alien ways could be misinterpreted by Peter or his friends, leading to some initial tension. But as they get to know each other better, they realize they have more in common than they thought. Or perhaps they get transported to an alternate dimension together and have to rely on each other to find their way back home. This would force them to work together closely and develop a bond that goes beyond their initial impressions of each other.
One plotline could be that they have to protect their city from a new super - villain who is specifically targeting married superhero couples. They'd use their combined powers and their strong bond as a married couple to defeat the villain.
Sure. There are some out there. The Jill Valentine x Nemesis fanfic often delves into interesting concepts. For example, some fics might rewrite the storylines to make them allies in a different kind of zombie apocalypse scenario. You need to search using relevant tags on the fanfic platforms to find the ones that suit your taste.
A good Jill Valentine x Zombie fanfic should have intense action scenes. Since Jill is a well - known action - oriented character, her battles against zombies need to be exciting. For example, detailed descriptions of her using her weapons like her handgun or knife against the undead can make the story gripping.