I'm not entirely sure specifically as it could vary greatly. It might be a fan - created story involving characters named rk800 and rk900. It could be in the context of a science - fiction or tech - related universe.
You could try looking on popular fanfiction websites like Archive of Our Own (AO3) or FanFiction.net. They usually have a large collection of fan - created stories across various genres and fandoms.
A possible fanfic storyline is that RK900 and RK800 are sent on a mission in a post - apocalyptic world. RK800 has more experience with dealing with humans on an emotional level, while RK900 has superior combat and analytical skills. They face many challenges, like finding resources and fighting off rogue androids. Along the way, they develop a deeper bond as they rely on each other for survival.
Character development could occur through their interactions with other characters. If they meet new androids or humans, how they react can show different sides of their personalities. For instance, if they encounter a human who is prejudiced against androids, RK800 might try to reason with the person, while RK900 could be more defensive. This would show RK800's more diplomatic side and RK900's protective nature.
In such fanfiction, rk900 is often depicted as highly intelligent and efficient. He is extremely logical and has a vast knowledge base. For example, he can quickly analyze crime scenes and come up with solutions. Gavin, on the other hand, is more impulsive and hot - headed. He acts on his instincts first but also has a strong sense of justice. He may not be as tech - savvy as rk900, but his street experience gives him an edge in certain situations.
A common theme could be the relationship development between rk900 and gavin. It might explore how they go from being at odds to understanding each other better.
One common theme is the clash of personalities. Gavin is often hot - headed while RK900 is more stoic. Another theme is the exploration of what it means to be human, especially when RK900 is involved. They also often have themes of redemption, where Gavin might see RK900 in a new light and vice versa.
One interesting fanfiction might be about RK800 and RK900 working together on a complex mission. They could use their unique abilities to overcome various obstacles. For example, RK800's experience and RK900's enhanced physical capabilities might combine in a really cool way to save the day in a story.
There's often the theme of discovery. Gavin discovers new aspects of himself and his views on androids through his connection with RK900. And for RK900, he might discover emotions or a sense of self that he wasn't initially programmed to have. Also, the theme of trust is common. They have to learn to trust each other in a world where humans and androids are in a complex relationship.
Another way they interact is through conflict. RK900 might be programmed with a different set of priorities than RK800. This could lead to clashes between them as they try to achieve their respective goals. However, through these conflicts, they might also come to understand each other better and find common ground in the end.