Start by researching both Martin Mystery and the other property you want to cross it with. Know the characters, their personalities, and the rules of their respective universes. Then, come up with a central mystery or problem that can only be solved by the combined efforts of the characters from both. This will give your fanfic a strong focus and keep the readers interested.
First, you need to decide which other universe you want to cross it with. Once you've chosen, study both the Martin Mystery world and the other world's lore, characters, and settings. For example, if it's with 'Ben 10', understand how the Omnitrix works and the types of aliens Ben can transform into, as well as Martin's gadgets and how his team operates.
First, decide which other universe or series you want to cross Symphogear with. This is crucial as it sets the tone and the potential for interesting interactions. Then, think about the plot. It could start with a strange phenomenon that pulls the characters from both worlds together. For example, a dimensional rift.
First, choose the crossover. If it's a crossover with 'Power Rangers', think about how the Miraculous powers and Ranger powers interact. Then, plan the plot. Maybe the Rangers' zords are being affected by Hawk Moth's magic, and the Miraculous holders need to help.
Start by choosing a crossover concept that interests you, like a Shin Godzilla and Transformers crossover. Next, establish the rules of this new combined universe. Will Godzilla be able to damage the Transformers? How will the Autobots or Decepticons view Godzilla? Then, start writing the beginning of the story. You could start with a mysterious event that brings Godzilla into the Transformers' world, like a space - time rift. From there, develop the plot by showing how different characters respond to this new situation and how their goals might change.
First, you need to decide which other universe or series you want to cross over with Highschool DxD. Once you've made that choice, research both universes thoroughly. Know the characters, their powers, and the rules of their respective worlds. Then, come up with a plot. It could be something as simple as a character from one universe getting lost in the other, or a more complex plot involving a common enemy that both universes have to face. For example, if you're crossing over with Bleach, you could have a powerful hollow that threatens both the Soul Society and the DxD world.
First, decide which other universe or franchise you want to cross the Addams Family with. Then, think about how the characters from both sides will interact. For example, if it's a crossover with the Addams Family and the Simpsons, consider how Homer would react to Gomez's flamboyant personality. You can start with a simple scenario like the Addams family moving into Springfield. Then, build the story around the cultural clashes and similarities between the two families.
Begin by creating a basic plot outline. Consider the main goal for the characters in the dungeon. Will they be looking for a treasure? Or trying to escape? Also, think about how the different powers and abilities of the crossover characters will interact with the dungeon's mechanics. For example, if you have a character who can fly in their original universe, how will that work in the dungeon's narrow passages? You need to plan these details carefully.
First, decide which two universes or characters you want to cross over. For the 'big boss crossover fanfic', you need to choose a world that would make an interesting contrast or combination with Big Boss's own world. Then, come up with a basic plot idea, like a common enemy or a shared goal.
Begin by establishing the characters' relationships. If it's a 'Mission Impossible' and 'Sherlock Holmes' crossover, you need to figure out how Ethan Hunt's action - oriented mindset will interact with Holmes' deductive reasoning. You could start with Hunt seeking Holmes' help to solve a mystery that has stumped the IMF. This way, you introduce the two worlds and set the stage for the rest of the story.
To start an Overwatch crossover fanfic, you should begin by getting really familiar with both Overwatch and the other universe you're crossing it with. If it's a crossover with the DC Universe, study the powers, personalities, and backstories of the characters from both. Then, come up with a conflict that would require both sets of characters to work together or against each other. For instance, a powerful villain from DC has stolen some crucial technology from Overwatch. Outline your story, including the main events, character arcs, and how the crossover will end. Don't forget to give your story a unique title that reflects the crossover.