In a Reboot the Guardian Code OC fanfiction, a great plot could be that the OC is a time - traveler. They travel back to the creation of the Guardian Code and witness some events that were lost in history. This knowledge gives them an edge in the present day as they try to prevent a future disaster that was prophesied in an ancient part of the code. Another plot could be that the OC has the ability to communicate with the 'lost' fragments of the Guardian Code. These fragments hold great power and knowledge. The OC has to gather these fragments to restore the Guardian Code to its full potential while being chased by those who want to use the fragments for evil purposes. Also, the OC could be a reincarnation of a key figure in the Guardian Code's past and has to fulfill a destiny that was long forgotten.
One idea could be that the OC discovers a hidden power within the Guardian Code that was previously unknown. This new power could either be a great asset or a dangerous liability, leading to a series of adventures as they try to control it. Another plot could involve the OC getting stuck in a virtual world created by a glitch in the Guardian Code. They must then find a way to escape while also dealing with virtual threats. A third idea is that the OC teams up with an unlikely ally from within the Guardian Code universe to stop a new, powerful enemy that threatens to destroy the entire code system.
A good way to develop an OC for this fanfiction is to consider their motivation. Why are they in the Guardian Code world? Are they there to seek revenge, to find a lost family member, or to fulfill a prophecy? Their motivation will drive their actions. Next, think about their appearance. It should reflect their personality and backstory. If they are from a rough part of the code world, they might have a scruffy look. And don't forget about their relationships. They could have a mentor who guides them in the ways of the Guardian Code, or an enemy who constantly tries to thwart their plans.
One idea could be an OC who is a commoner but has a unique power that gets noticed by Lelouch. For example, the ability to manipulate sound waves which could be used for both stealth and attack. Another could be an OC from a foreign nation who has different moral and cultural values than the Britannians and Japanese, creating interesting conflicts. Or an OC who is a brilliant scientist working on a secret project that could change the balance of power in the Code Geass world.
One idea could be that the OC is a traveling artist who stumbles upon Rapunzel's tower. Rapunzel is intrigued by the OC's art and they start to create art together, using the long hair as an unconventional paintbrush. This could lead to a friendship where they both learn about the outside world through each other's eyes.
One plot idea could be Mildred getting involved in a time - traveling adventure. Maybe she accidentally gets sent to a different era in the Futurama universe and has to find her way back while dealing with the strange characters and situations of that time. For example, she could end up in the pre - apocalyptic world and have to team up with some of the early inventors to fix the time - travel device.
A possible plot is the OC having a Geass that allows him to understand and communicate with all forms of life. This would make him very interesting to the different factions in Code Geass. The Britannian royalty might want to use him for political gain, while the resistance groups see him as a potential ally. Along the way, he forms a harem of characters from both sides who are drawn to his unique ability and kind heart.
One idea could be an OC who has the power to manipulate time in a limited way. They could use this power to try and prevent certain tragedies in the Code Geass world, like the fall of certain regions. Another plot could involve an OC who is a master strategist from a different universe and has to adapt their skills to the complex politics of Code Geass. A third idea might be an OC who can communicate with machines, which could lead to some really unique interactions with the mechs in the series.
Your OC could be a mechanic from a different planet who idolizes Rocket. They join the Guardians after impressing them with their skills in fixing a crucial piece of the Milano. This could lead to a story about the OC learning the ropes of being a Guardian, getting into arguments with Rocket about the best ways to upgrade their weapons and ships, and also developing relationships with the other members of the team. It could also involve a plot where the OC has to face their own fears when they are in a dangerous situation on a mission.
One idea could be that the OC is a marine biologist who discovers a new species that is somehow related to Aquaman's kingdom. Aquaman, through the ORM (Object Relational Mapping, which could be used to bridge the real world and the underwater world in a tech - savvy way in the story), reaches out to the OC for help. Another plot could involve the OC being a descendant of an ancient underwater civilization that was thought to be extinct. Aquaman, using the ORM to access surface - world knowledge, uncovers this connection and they team up to face a common threat to both their worlds, like a powerful sea - witch. A third idea is that the OC has a special ability to communicate with sea creatures in a unique way, and Aquaman, with the help of the ORM to understand the surface - world implications of this ability, recruits the OC to help him in a diplomatic mission to convince surface - dwellers to stop polluting the ocean.
Well, a great plot could involve a kid OC who discovers a hidden bunker filled with supplies but it's guarded by a group of unfriendly survivors. The kid has to use their wits to either befriend or outsmart them to get the supplies for their own group. Also, the kid OC could be an artist before the apocalypse and they use their art skills to create maps or symbols that only their group understands, which helps in navigation and communication. And there's always the idea of a kid OC who has a pre - existing medical condition and has to struggle to find the right medications while surviving the zombie hordes.
Well, you could have a plot where Frankie is on a quest to find a missing artifact. This artifact could hold great power or be the key to saving their community. Along the way, they meet allies and foes. Or perhaps Frankie accidentally gets transported to a different time period. They then have to use their wits to survive and find a way back home while also learning about the past or future. Also, Frankie could enter a competition where they have to show off their unique skills and face tough opponents.