One idea could be that Billy and Steve's kids inherit their dads' competitive streaks. They might compete in a school sports event, which leads to some sibling rivalry but also shows how they support each other in the end. Another could be that the kids discover a hidden talent for music, just like how their dads had hidden depths. For example, they form a band and perform at a local event.
The relationship between Billy and Steve is full of contrasts. Billy is often more hot - headed while Steve is more level - headed. Their kids could show this in how they handle emotions. One kid might be quick to anger like Billy, but the other could be the calm one, like Steve, and they balance each other out. They might also show their dads' relationship in their love for each other. Just as Billy and Steve support each other, the kids are always there for one another, through thick and thin, whether it's helping with homework or dealing with a personal crisis.
One plot idea could be that the OC is a scientist who is working on a top - secret project related to time travel, and Steve gets involved. They have to work together to prevent a villain from changing history. Along the way, they develop a deep connection as they face challenges and discover each other's true selves.
Perhaps they could be in a modern - day high school setting where Mandy is the cool, mysterious girl and Billy is the nerdy but kind - hearted boy. They get paired for a school project and at first they clash because of their different personalities. But as they spend more time together, they find common interests like a love for old horror movies and start to develop feelings for each other.
Perhaps in a post - Endgame world, Tony didn't die but lost his memory. Steve takes it upon himself to help Tony regain his memories. Along the way, they re - explore their relationship, the Avengers, and all the events that led to that point. Steve shows Tony videos and tells stories, and slowly Tony starts to remember, leading to a renewal of their friendship and a new start for the Avengers.
One common theme is redemption. Billy is often portrayed as a character who has made mistakes and through his relationship with Steve, he finds a path to redemption. For example, in many fics, Steve's kindness and understanding help Billy change for the better.
One common theme is the idea of redemption. Billy often has a troubled past, and in the fanfictions, Steve can be a part of his journey towards becoming a better person. For example, in many stories, Steve's kindness and understanding help Billy deal with his inner demons.
A possible plot for Billy and Mandy crossover fanfiction is that they end up in a world of magic school. Billy is completely clueless about magic at first and keeps causing chaos in the classes. Mandy, on the other hand, is intrigued by the different types of magic and tries to learn as much as she can. They get involved in a competition between different houses in the school, and their friendship is tested as they face various challenges and temptations during the competition.
One idea could be that they discover they are going to be parents unexpectedly and have to deal with the reactions of their friends and family. It could be a comical situation as they are both rather unconventional characters. For example, Grim might be shocked and initially try to find a way to reverse it, but then slowly warm up to the idea of being an 'uncle' of sorts.
Perhaps in the fanfiction, they decide to start a family right away. But there are complications. Kono has some concerns about her ability to balance being a mother and still being part of Five - 0. Steve is very supportive, and they go through a journey of trying to make it all work. There could be some drama with their friends and colleagues as they adjust to the idea of Kono and Steve becoming parents.
One idea could be to explore what would happen if Grim lost his powers for a while. Billy and Mandy would have to figure out how to deal with the supernatural chaos without Grim's direct help. Another could be a time - travel plot where they go back to when Grim first became the Grim Reaper and try to change some of the rules of the underworld. Maybe they could also meet some of Grim's old friends or enemies from his past that would add a new layer of adventure.