First, you should study Bastion's character. Know his backstory, his abilities, and his relationships with other characters in Overwatch. For example, Bastion was once a war machine, but now has a more peaceful side. You can build on this.
Once you have your concept, start writing. Describe Bastion's actions, thoughts, and feelings in detail. For instance, if he's in a dangerous situation, how does he react as a machine with a new - found sense of self? Use vivid language to bring the story to life, and don't be afraid to let your creativity run wild.
One great Overwatch Bastion crossover fanfiction is 'Bastion in Another World'. It has Bastion being transported to a fantasy realm. The author does an amazing job of describing how Bastion's mechanical nature interacts with the magic of the new world.
First, get to know the Overwatch lore really well. This includes all the heroes, their backstories, and the world they live in. For example, if you want to write about Tracer, you should know about her time - traveling abilities and her relationship with the other agents.
First, come up with a unique original character. Decide on their appearance, abilities, and backstory. For example, you could create an OC who has the power to manipulate time. Then, think about the setting in the Overwatch universe where your story will take place. It could be in one of the existing maps or a new location you invent. Next, plan out a basic plot, like your OC joining the Overwatch team or going on a solo adventure against the omnics.
You need to consider the world of Overwatch carefully. How does your Omnic OC interact with the existing characters? Maybe it has a special relationship with Bastion, as they are both Omnics. It could also be influenced by the political situation in the Overwatch universe regarding Omnics and humans.
One possible plot for this fanfiction could be that Bastion accidentally activates an ancient Omnic protocol. This protocol sends out a signal that attracts the attention of both Overwatch and a group of evil Omnics. The Overwatch heroes, including Bastion's friends like Torbjorn, come to Bastion's aid. Together, they have to fight off the evil Omnics and find a way to deactivate the protocol before it causes more chaos. It could be a story of friendship, sacrifice, and the struggle between good and evil in the Overwatch universe.
One common theme is Bastion's struggle to understand humanity. Since Bastion is a sentient omnic, many fanfictions explore how it tries to make sense of human emotions, behaviors, and relationships. Another theme is Bastion's friendship with other Overwatch characters, like Torbjörn who has a connection to Bastion's creation.
To start writing your Overwatch 2 fanfic, familiarize yourself with the game's lore. Know the backstories of the characters, the different locations, and the overall plot. This will give you a solid foundation. Next, think about the theme of your fanfic. Is it a story of friendship, adventure, or something else? After that, start with a strong opening. It could be an action - packed scene or an interesting dialogue between two characters. And don't forget to use vivid descriptions to bring your story to life.
To start an Overwatch fanfic, begin by exploring the existing fanfic community. Read a variety of fanfics to get a sense of what's been done and what you can do differently. Decide on the tone of your fanfic, whether it's serious, comical, or something in between. If you want to write about a new hero, study their abilities and backstory in detail. For example, if it's Echo, understand how her adaptive programming works. Then, create an outline for your story. This could include the introduction, rising action, climax, and resolution. Once you have your outline, start filling in the details and writing the actual story.
The Bastion origin story in Overwatch is about a war machine that was created for combat. Bastion was part of a large army of mechanical units. After a great war, Bastion was damaged and lay dormant in a forest. There, it began to interact with nature and developed a new understanding, rather than just being a tool for destruction.
One common theme is friendship. Bastion, being a rather unique character in the Overwatch universe, often forms unexpected friendships in fanfiction, especially with other heroes. Another theme is redemption. Bastion's past as a war machine can lead to stories where it tries to atone for its actions. And of course, there are also romantic themes in some of the fanfictions, exploring a relationship between Bastion and another character.