Most Billy x Mandy fanfic often has a spooky or supernatural element, just like the original show. It usually centers around the odd couple - Billy, the dim - witted but good - hearted boy, and Mandy, the cynical and somewhat menacing girl.
Granny from the series could be a great addition. She could act as a sort of wise advisor to Mandy and Billy, providing them with valuable advice based on her own experiences. Her no - nonsense attitude could also add some humor to the story, especially when she scolds Billy for his silly mistakes or when she encourages Mandy to be more open - hearted.
One common theme is the exploration of their unique relationship. Given their different personalities in the show, fanfictions often play with how they interact and grow closer. Another theme could be adventure, where they go on some crazy quests together.
Characterization is crucial in popular 'Mandy x Grim' fanfiction. Writers usually make Mandy even more headstrong and Grim even more otherworldly. The plot often has a bit of a dark or edgy tone, to match their personalities. For example, they might be on a quest to save the world from some dark force, but in a way that's different from the original story. There's also often a sense of humor, despite the dark themes. This can come from Mandy's sassy remarks or Grim's cluelessness about human things, which makes the story engaging and popular among fans.
One popular Irwin x Mandy fanfiction could be 'The Unlikely Bond'. It focuses on their unique relationship and how they overcome various challenges together. It might have interesting character developments and plot twists.
A common theme is the exploration of their different personalities coming together. Mandy might be portrayed as more reserved, while Steven is more outgoing, and the fanfiction could show how they balance each other out.
One great Grim x Mandy fanfiction could be 'Grim and Mandy's Unlikely Alliance'. It might explore how their different natures, Grim being a reaper and Mandy having her dark and fearless side, come together in a series of adventures. Maybe they team up to face a greater evil in the underworld that threatens both the world of the living and the dead.
Fanfiction.net is also a great place to look. There are many different categories and fandoms represented on this site. Look for the Grim and Mandy section within the appropriate genre (probably something in the horror or supernatural genre) to find fanfictions about them.
Friendship is a common theme. Since Harry and Mandy are often from different backgrounds in these fanfictions, their friendship development is interesting to explore. For example, in some stories, Mandy might be a Muggle - born witch and Harry, being the famous Boy Who Lived, has to bridge the gap between their worlds.
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.