One great Percy x OC fanfic could be 'Percy and the Mysterious Newcomer'. In this story, the OC might be a new demigod at Camp Half - Blood. Percy is initially suspicious but then they end up on an adventure together to save the camp from a new threat. It's full of action and the developing relationship between Percy and the OC is interesting to read.
A third one could be 'The OC's Quest with Percy'. In this fanfic, the OC has a personal quest that she convinces Percy to join. Along the way, they face many challenges that test their friendship and loyalty. It shows how two different characters can grow and learn from each other in the face of danger.
Another idea is that the OC is a demigod from a long - lost Greek city. They meet Percy during a battle against a common enemy. The OC has a deep knowledge of ancient Greek magic that helps Percy and his friends in their fight. As they work together, a romantic relationship starts to develop between Percy and the OC.
One great sasuke x oc fanfic could be 'A New Bond'. In this story, the OC is a strong - willed ninja from a far - off land. She meets Sasuke during a mission and their relationship slowly develops from mutual respect to something more. The story has great action scenes and detailed character development.
Some 'alucard x oc fanfic' are really good at character development. The OC could be a shy and timid character at first, but through their encounters with the powerful and intimidating Alucard, they grow into a more confident person. And Alucard, in turn, might soften his cold exterior because of the OC.
There are akatsuki x oc fanfics where the OC is a spy. In this kind of story, the OC has to infiltrate the Akatsuki while hiding their true identity. The OC might start to have second thoughts as they get to know the members on a more personal level, and this internal conflict makes for an interesting plot. They may end up changing sides or finding a middle ground.
Well, in many 'joker x oc fanfic' works, the OC could be a psychiatrist who tries to understand the Joker. This creates an interesting dynamic as the OC is drawn into the Joker's mind games. Some fanfics also show the OC having some sort of special ability that either attracts or repels the Joker, leading to intense and often unpredictable interactions.
One great Avenger x OC fanfic could be 'The New Recruit'. It's about an OC who has a unique power and joins the Avengers. The story focuses on how the OC interacts with the existing members like Tony Stark, with lots of witty banter and the OC gradually earning their respect. Another one might be 'OC's Hidden Talent' where the OC has a secret ability that becomes crucial in saving the world from a new threat. This fic often shows the OC's internal struggle with being different among the Avengers.
One great 'Predator X OC Fanfic' could be about an original character who is a skilled survivalist and ends up in the Predator's hunting ground. The OC uses their wits and unique skills to outsmart the Predator at every turn. For example, they might use the environment to their advantage, setting traps that the Predator isn't expecting.
One great 'ulquiorra x oc fanfic' might be those that explore the complex relationship between Ulquiorra's cold nature and the unique personality of the OC. For example, some fanfics might show how the OC gradually breaks through Ulquiorra's emotional barriers. Another good aspect could be the exploration of the Bleach universe from the perspective of this relationship. The OC could introduce new elements to Ulquiorra's story arc, like different ways of seeing the concept of loyalty in the Arrancar society.
There's also 'Zeref's Unlikely Companion'. In this fanfic, the OC is a healer who stumbles upon Zeref. It shows how their relationship develops from initial fear and suspicion to something more complex. The author does a good job of building tension and chemistry between them.
A popular 'Blackfire x OC' fanfic is 'The Redemption of Blackfire'. Here, the OC has a pure heart and tries to bring out the good in Blackfire. The story is filled with emotional moments as Blackfire struggles with her own nature and the influence of the OC. It delves deep into their characters and how they can change each other for the better.