Another interesting concept is a Kryptonian OC who is part of a secret society on Earth. They keep their identity hidden from the world, but within this society, they use their powers to maintain order and justice in a more shadowy way. They might have to deal with internal power struggles within the society as well as external threats to their secrecy.
A cool Kryptonian OC fanfiction concept could be about a Kryptonian who was exiled from Krypton for a crime they didn't commit. They land on Earth and have to prove their innocence while also dealing with their new life here. Their powers could be fading because of the different environment, and they have to find a way to regain them. Maybe they team up with some of Earth's heroes or anti - heroes to achieve this.
Maybe the OC Kryptonian has a power that is malfunctioning. They struggle to control it and it causes problems within the Justice League at first. But through the help of other members like Superman, they learn to master it. This could lead to a story of self - discovery and friendship within the team. They could face a villain who specifically targets their power, making it a race against time to get it under control.
In this fanfic, there could be a scenario where Batman is exposed to Kryptonian technology that gives him some Kryptonian - like abilities temporarily. A Kryptonian comes to Earth to study this anomaly. They start off as adversaries but as they learn more about each other, they find that they can work together to protect Earth from a greater threat that only their combined skills can defeat.
Well, a plot could be that the reborn character discovers a hidden power within Kryptonian abilities that no one else knew about. This could put them in a position where they are both feared and revered. Also, they could form an unlikely alliance with a group of Kryptonians who were considered outcasts. Together, they try to bring about a new era on Krypton. Another interesting plot would be the character being sent on a mission to a different planet. Since they are reborn as a Kryptonian, they have unique skills for this mission and face various challenges during it.
One idea could be that Naruto is somehow given Kryptonian powers. He might start using his newfound super strength and flight in his battles in the ninja world. For example, he could use his super speed to outmaneuver opponents more easily during a fight with Akatsuki members.
A hobbit OC fanfic could focus on a young hobbit who dreams of leaving the Shire to become a great warrior. They set out on a journey against the wishes of their family and face many challenges. Along the way, they meet different races like elves and dwarves and learn from them, all while trying to prove themselves in a world that doesn't expect much from hobbits in terms of combat.
One idea could be creating an OC that is a hybrid of different Pokemon types. For example, a Pokemon with the features of a water - type and an electric - type. This could lead to unique abilities and an interesting backstory about how it came to be. Another idea is to have an OC that is a trainer from a far - off, unexplored region. This trainer could have different training methods and a whole new set of Pokemon not commonly seen in the main Pokemon world. You could also make an OC that is a Pokemon with a special power related to emotions, like it can heal other Pokemon's wounds when they are sad or boost their power when they are happy.
An OC in a Grojband fanfic could be a time - traveler from the future. They come back to the present day where Grojband exists and tries to change the course of the band's history. Maybe they know that the band is going to face a big obstacle in the future and they want to prevent it. This OC could introduce futuristic music technology to Grojband, making their music even more extraordinary.
Well, in 'oc reincarnation fanfic', one interesting idea could be the transformation of the original character (oc). Maybe the oc is reincarnated into a completely different world with new abilities and challenges. For example, an oc who was a simple villager in their previous life might be reincarnated as a powerful mage in a magical realm. Another idea could be the exploration of past memories in the new life. The oc could have flashes of their former self and use that knowledge to their advantage in the new world.
One idea could be creating an OC who is a master of disguise. They could use this skill to gather information and try to outwit the mastermind. Another idea is an OC with a unique phobia that adds an interesting twist to the killing game scenario. For example, an OC who is terrified of the dark and has to face challenges in a pitch - black area.