In your 'Seven Deadly Sins OP OC Fanfiction', you can make it stand out by having a distinct writing style. Use vivid descriptions to bring the world of the Seven Deadly Sins to life. Describe the battles, the magic, and the different kingdoms in detail. Also, make your OC's power have a cost. For example, if they have an OP power related to pride, every time they use it, they lose a bit of their sanity or some other negative consequence. This adds depth to the character and makes the story more interesting. Moreover, explore moral and ethical themes through your OC's actions and decisions, which will engage readers on a deeper level.
One idea could be creating an OC (Original Character) who is a descendant of one of the main characters in 'Seven Deadly Sins' and has a unique power related to one of the sins. For example, an OC who is a descendant of Meliodas and has a power that is a variation of his 'Full Counter' ability but is related to the sin of wrath. Another idea is to make an OC that is from a different kingdom entirely and has to deal with the chaos caused by the Seven Deadly Sins. They could start off as an antagonist but later realize the true nature of the sins and join them.
Give your OC a really distinct personality trait. For example, if they're super clumsy but also incredibly smart when it comes to magic theory. Another way is to give them a unique appearance, like having bright purple hair that always seems to be on fire (in a magical, not dangerous way).
A great way to create a memorable OC for Seven Deadly Sins fanfiction is to mix different elements from the existing characters and the world. Take some of the personality traits of the main characters and combine them in a new way. For instance, an OC could have the loyalty of Ban and the intelligence of Merlin. In terms of appearance, draw inspiration from the medieval - like setting of the series. Give them a weapon or an ability that is not common in the series. For example, an OC that can control shadows in a way that is different from any other character. Their motivation should also be clear, whether it's revenge, love, or something else.
First, focus on creating a really unique OC. Give them a distinct personality, backstory, and appearance. For example, if your OC has a tragic past that led to their Persona awakening, it can make them more interesting. Second, tie their story into the existing lore of Persona 5 in an unexpected way. Maybe your OC discovers a hidden aspect of the Metaverse that the Phantom Thieves didn't know about. Third, use vivid descriptions, especially when it comes to the battles in the Metaverse and the manifestations of the Personas.
To make your Shanks OC stand out, focus on their backstory. Maybe they come from a small, forgotten island with a special culture that no one else in the One Piece world has seen. This could influence their values and how they interact with Shanks and his crew. Their goals should also be different. Instead of just wanting to be a powerful pirate, they could be on a quest to find a certain type of flower that only grows in the most dangerous parts of the Grand Line because it has a connection to their past. And don't forget relationships. If your OC has a complex relationship with Shanks, like being in love with him but also being his rival in some ways, it will make them more interesting.
Give your OC a distinct personality trait. For instance, if your OC is super optimistic in the face of every difficulty at PCA. This positive attitude will set them apart from other characters.
Create a distinct appearance. Instead of just having a regular human - like form, you could make your OC a combination of different Inkwell Isles creatures. Say, with the body of a frog and the wings of a dragonfly. The more unusual the appearance, the more it will stand out.
Use vivid and detailed descriptions. When describing Rumpelstiltskin, don't just say he's small and imp - like. Describe his tattered clothes in detail, the way his eyes glint with mischief. For the OC, describe their emotions and reactions in a more nuanced way. For example, when they first meet Rumpelstiltskin, they might be both terrified and fascinated at the same time. This will draw the readers in and make your fanfiction more memorable.
Give your OC a unique backstory. For example, if your OC has an elemental power, explain how they got it in a different way than the main characters. Maybe they got it from an ancient artifact instead of being born with it. Also, give them a distinct personality trait. If all the ninja are brave, make your OC brave but also really superstitious.
Develop a really unique and well - thought - out OC. Give them a distinct personality, backstory, and set of skills. For instance, an OC with a phobia that they have to overcome during missions can make for an interesting read.