Yes, there could be some really cool crossovers. For example, the unique abilities and characters from RWBY could interact with the stealth and espionage elements of Metal Gear Solid in interesting ways. Maybe Ruby's speed could be used to outmaneuver the guards in a Metal Gear Solid - like base setting.
The plot might involve the Metal Gear Solid technology finding its way into the RWBY universe. For example, the Patriots' AI system could be a threat in the RWBY world. The RWBY characters would then have to use their unique abilities, like Weiss's glyphs and Blake's shadow clones, to combat this new threat while also adapting to the stealthy tactics of Metal Gear Solid.
Solid Snake is often very popular. He's the main protagonist in many of the games, so he naturally takes center stage in a lot of fanfiction. His cool and stoic personality, along with his incredible combat and stealth skills, make him a favorite to write about.
One idea could be exploring the backstory of a minor character. For example, the life of a random guard in one of the bases. What led them to work there? Do they have a family? Another could be a what - if scenario, like what if Snake had made different choices during a crucial mission. It could completely change the course of the story.
Solid Snake is an obvious choice. He has a rich backstory and many adventures that can be further explored. You can write about his internal struggles, like his relationship with his genes and the legacy of Big Boss. Another popular character is Otacon. His friendship with Snake and his role as a tech expert offer a lot of potential for fanfiction, such as his inventions getting into the wrong hands or his attempts to upgrade Snake's gear.
One common theme could be the struggle between good and evil. Both RWBY and Metal Gear Solid have their own versions of this. Another could be the use of technology and combat skills. In RWBY, they have their weapons and semblances, and in Metal Gear Solid, there are all kinds of high - tech gadgets and combat techniques.
One interesting concept could be an alternate timeline where the main characters make different choices. For example, Snake could choose to side with a different faction, leading to a whole new set of missions and story developments. Another could be a fanfiction that focuses on the backstories of the minor characters, like how they came to be involved in the Metal Gear Solid world.
Maybe a fanfiction about a new character who is a super - skilled gamer being recruited by the in - game organizations. This character could introduce new strategies and technologies based on real - world gaming knowledge, changing the dynamics of the Metal Gear Solid universe.
Ruby could be really excited to meet Solid Snake and learn his stealth techniques. Snake, on the other hand, might be initially cautious about Ruby's over - enthusiasm but then come to respect her skills. He could teach her how to move more quietly and efficiently in a dangerous environment.
First, know the source material well. Be familiar with the characters, the storylines, and the game mechanics of Metal Gear Solid. This will help you create a believable and immersive fanfiction. For example, if you're writing about a stealth mission, understanding how stealth works in the game is crucial.