One idea could be an OC who is a brilliant scientist in the Fallout world. They could be working on a secret project to reverse the effects of radiation. Another idea is an OC who is a wandering trader, having all kinds of adventures while traveling from one settlement to another, facing raiders and mutants along the way. And a third idea could be an OC that is part of a new faction trying to bring peace and order to the wasteland.
An interesting Fallout OC for a fanfiction could be a child who was born in the wasteland but has an uncanny ability to find pre - War tech. This child's journey could involve being hunted by various groups who want to use their ability for their own gain. Another option is an OC who is a ghoul with a photographic memory. They remember the world before the war and are on a mission to preserve the history and culture of that time. And yet another idea is an OC who is a synth that has gained self - awareness and is trying to find their place in a world that fears and hates them.
One idea could be creating an OC who is a former NCR soldier turned bounty hunter. They could have a complex backstory of disillusionment with the NCR's politics and find a new purpose in tracking down dangerous criminals in the Mojave Wasteland.
One idea could be creating an OC who is a hunter from RWBY world but ends up in the Fallout New Vegas setting. They could use their unique weapon skills from RWBY, like using a scythe in combat, and adapt them to the post - apocalyptic world. Maybe they team up with some of the factions in New Vegas while also trying to find a way back home.
There are Fallout 4 OC fanfictions where the OC is a wandering trader. This character travels across the wasteland, trading rare items and having all kinds of adventures along the way. They might encounter raiders, super mutants, and make unexpected allies in different settlements.
A plot idea could be that the Courier discovers a powerful relic in the Fallout world that has the power to connect different universes. This relic accidentally transports the Courier and some of the key RWBY characters to a strange in - between realm. In this realm, they have to work together to find a way back to their respective worlds while also facing challenges that are a mix of both Fallout and RWBY elements, like Grimm - like creatures with post - apocalyptic mutations and bandits with Dust - powered weapons.
One idea could be a story where the protagonist, a lone wanderer, gradually gathers a diverse group of female companions from different factions in the Fallout world. For example, a Brotherhood of Steel scribe, a raider who has a change of heart, and a super mutant with a unique personality. Their relationships could develop as they face various threats together, like fighting off hordes of feral ghouls or taking on powerful raider gangs.
One idea could be a crossover where characters from Fallout enter the RWBY universe. For example, a Vault Dweller could end up in Vale and have to adapt to the Grimm - filled world while also trying to find a way back home. Another could be a story where RWBY characters are thrown into a post - apocalyptic setting like in Fallout, dealing with radiation and mutated creatures.
One interesting story could be about an Enclave OC (Original Character) who tries to reform the Enclave from within. This OC might face opposition from the more traditional and power - hungry members of the Enclave, but through determination and some unexpected alliances, they start to make changes.
A great 'oc gamer fallout 4 fanfiction' could revolve around an OC who is a synth hunter. In Fallout 4, synths are a big part of the lore. This OC has a personal vendetta against synths because they lost their family to a synth attack. They go on a quest to hunt down every synth they can find, all while dealing with the moral ambiguity of whether all synths are truly bad or if some are just trying to survive like everyone else.
One interesting story could be about an Enclave OC who tries to reform the Enclave from within. This OC might see the flaws in the Enclave's extreme ideology and work towards a more inclusive and less tyrannical organization.
A plot could involve a group of settlers from Fallout 3 trying to make a new start in the Mojave. They run into trouble with the various factions in New Vegas. Meanwhile, a character from New Vegas goes to the Capital Wasteland to learn about their different ways of survival. This leads to an exchange of ideas and technology between the two groups, as well as some clashes due to different values.