First, decide which two universes or characters you want to cross with Sans. This is crucial as it will set the tone and direction of your story. Then, do some research on both. If it's a crossover with a game or a book you're not familiar with, make sure you know the basic rules, settings, and character traits. For example, if it's a crossover with a Final Fantasy game, understand the magic system and the different races.
Once you have the initial setup, start developing the plot. Maybe there's a conflict in this new world that only Sans can help solve. Or perhaps he has to find a way back home while dealing with the challenges of the new place. Keep in mind the pacing of the story. Don't rush through important events and give enough space for character development. Also, don't be afraid to add some humor or unique twists to make your cross sans crossover fanfiction stand out.
First, decide on the two universes you want to cross over. For example, if it's with a magical girl anime universe, figure out how Seraphim Sans fits into that world. Then, create a basic plot. Maybe he's lost his powers and has to team up with a magical girl to get them back. Next, start writing an introduction that grabs the reader's attention, like starting with a strange event that brings Seraphim Sans into the new universe.
Begin by creating a basic plot outline. Maybe Sans is on a quest in the human world, or he's there by accident and just wants to get back home. Then, develop your characters. Besides Sans, create interesting human characters that he'll interact with. Their personalities and backstories will drive the story forward. For instance, you could have a young scientist who is fascinated by Sans' abilities and tries to study him, which could lead to all sorts of adventures and conflicts in the story.
One idea could be a cross with a classic fairy tale. For example, Sans from Undertale could be in a world where he meets characters from Cinderella. He could use his unique abilities to help Cinderella in a new and unexpected way. Maybe he uses his shortcuts to quickly gather all the things she needs for the ball or to outwit the evil stepmother.
One aspect to consider in this fanfiction could be the unique dynamic between Nightmare Sans and Cross Sans. Their personalities are quite different. Nightmare Sans is often associated with negative emotions and a more menacing presence, while Cross Sans has his own complex backstory. In the fanfiction, they might interact in ways that explore themes of redemption, power struggles, or unexpected alliances.
To start writing a chara crossover fanfiction, you should start with brainstorming ideas for how the characters will interact. Will they be friends or foes at first? Also, think about how the different rules and worlds of the original characters will blend or clash. For example, if you're crossing a magical character with a non - magical one, how will that work? Sketch out a rough outline of the story, including the beginning, middle, and end. You can start with a simple premise like 'What if these two characters met?' and then build on it. Consider the character arcs for each of the crossed - over characters. How will they change during the story?
Begin by brainstorming ideas. Think about what would happen if the 'legion' met a different group of characters. You can draw inspiration from other crossover fanfictions you've read or movies/TV shows you've seen. After that, develop your characters. If you're bringing in characters from different universes, give them new dynamics. They might be initially suspicious of each other but then learn to work together. And don't forget to set the scene. Describe the new world that is created by this crossover, whether it's a mix of the 'legion' world and another or a completely new place where they all end up.
To start writing 'Battletech Crossover Fanfiction', begin by choosing a crossover that has potential for great stories. Say you pick 'Battletech' and 'Full Metal Panic'. Research both universes thoroughly. Next, create a strong plot. Maybe the mechs are being used in a war on a planet similar to the one in 'Full Metal Panic'. Develop your characters well, like how a Battletech pilot would react to the situations in the other universe.
Begin by exploring the personalities of Robin and the character he is crossing over with. If it's, say, Robin and Supergirl, understand how Robin's detective skills and combat training would interact with Supergirl's superpowers. You can start with a small encounter between them, like they meet by accident and then gradually build up to a bigger adventure. Also, don't forget to add some conflict, whether it's internal (Robin struggling with his own insecurities) or external (facing a powerful enemy).
Begin by creating a character profile for Android 21 in this new crossover setting. Consider her goals and how they might change. Also, establish the rules of the new world she's in. If it's a world of magic, how will her powers interact with magic? You can start with a simple scene, like her arrival in the new world, and build from there.
First, replay the game to get a fresh feel for the characters, settings, and story. Then, pick a concept or idea that you're passionate about, like a character relationship or an unexplored part of the game's lore. Start with a simple outline, including the beginning, middle, and end of your story. Don't worry too much about grammar at first, just get your ideas down on paper (or on the screen).