First, you need to know the source materials well. For Shockwave, study the 'Transformers' lore. Then, choose the other franchise for the crossover. Decide on a basic plot idea, like how Shockwave gets into the new universe. For example, if it's a 'Harry Potter' crossover, maybe a magic spell gone wrong transports him there.
One good example could be a crossover between 'Transformers' (where Shockwave is from) and 'Star Wars'. Picture Shockwave in the Star Wars universe, perhaps teaming up with the Sith due to his logical and power - hungry nature. Another might be a crossover with 'Mass Effect', where Shockwave's advanced technology could interact with the Reapers or other species in that universe.
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.
Character development is key. See how Shockwave's character changes or stays the same in the new crossover setting. For example, if he crosses over with a more emotional - based universe, does he start to show any emotions? Another element is the plot. A good plot should blend the two universes well, like if it's a Transformers and Star Wars crossover, the way the two different technologies and species interact.
Begin by brainstorming interesting scenarios. If you're doing an 'It' crossover with a sci - fi story, think about how the otherworldly elements of 'It' like the sewers and Pennywise's powers would work in a sci - fi setting. Decide on your main characters from both universes. Then, create a rough plot outline. You could start with a character from one world stumbling into the other. It's all about being creative and having fun with it.
First, decide which two universes you want to cross over. For example, if it's Little Nightmares and Alice: Madness Returns, study the lore and characters of both. Then, create a scenario that brings the characters together, like a strange portal opening up.
There's a fanfiction where Shockwave crosses over with a cyberpunk - themed world. In this story, Shockwave's logical and calculating nature stands out even more against the chaotic backdrop of the cyberpunk world. The author does a great job of showing how Shockwave adapts and tries to take control of the new environment.