A third option is to have a male OC who is a spy. He infiltrates the Gundam 00 organization with the aim of stealing some crucial technology for another group. However, as he spends more time there, he starts to question his own loyalty. He begins to form bonds with the people in the Gundam 00 world and realizes that the technology they are working on could have a positive impact on the universe if used correctly. This internal conflict between his original mission and his new - found beliefs could be the main focus of the fanfiction.
Another storyline could be that the male OC is from a family with a long - standing connection to the Gundam 00 project, but he has been kept in the dark about it. When he finally learns the truth, he decides to join the fight. He might be an excellent pilot, but he lacks the experience in the real battlefield. So, his journey would be about learning how to use his skills effectively while also dealing with the politics and secrets that surround the Gundam 00 world. For example, he could find out that there are some in the higher - ups who are using the Gundam for their own selfish reasons.
One idea could be to create a male OC who is a skilled mechanic. He could start off as an ordinary worker in one of the Gundam 00 facilities. But then, through a series of events, he discovers a hidden ability within himself related to the Gundam technology. Maybe he can communicate with the Gundam on a deeper level than anyone else. This could lead to him being recruited into a special team that deals with high - risk missions. He would have to face challenges not only from the enemies but also from within the team as some might be jealous of his new - found abilities.
The male OC Baratheon could also be a bastard son who has been living in exile. He returns to Westeros with a group of loyal followers he has gathered over the years. His main goal could be to claim a small piece of land for himself and his men, but he soon realizes he has to navigate the complex web of politics and allegiances in order to survive.
Maybe the male OC is a huge Lantern fan and he creates his own makeshift Lantern ring. It doesn't work like the real ones at first, but through his determination and some help from a mysterious mentor figure, he manages to unlock its true potential. This could lead to a story of self - discovery and growth within the Young Justice universe.
Another storyline could involve Kai's relationships. He could fall in love with an OC from a different tribe. This would create a lot of drama as their tribes might have some sort of feud or different values. They would have to fight against the odds to be together, and Kai might have to prove himself to her tribe to gain their acceptance.
One idea could be an OC who is a long - lost relative of the Russo family. They come to town with a special power that the Russos don't have, like the ability to control time. This could create all sorts of interesting situations, such as going back in time to prevent a major disaster that was going to happen to the family in the future.
Perhaps an OC Lannister who is a talented healer. In a world full of wars and battles in Game of Thrones, a healer Lannister could be an interesting addition. They might have to deal with the moral dilemma of healing both their own family's enemies and allies. They could also have a secret love affair with a member of another house, which would add a layer of drama.
One idea could be that the Saiyan male OC is a warrior from a different part of the Saiyan planet. He meets Kale during a universal tournament. At first, Kale is shy and reserved around him, but as they train together for the next rounds of the tournament, they start to develop feelings. The OC could teach Kale some new Saiyan fighting techniques that she hasn't seen before, which helps her gain more confidence in herself not just as a fighter, but also in her relationship with the OC.
One idea could be to have the male OC be a gamer in the real world who gets transported into the Naruto universe. He could use his gaming skills, like strategic thinking and quick reflexes, to adapt to the ninja world. For example, he might be really good at predicting opponents' moves in games, which would help him in battles against ninjas.
One idea could be to have the male OC reincarnated as a powerful shinobi from a forgotten clan. He could have unique abilities that set him apart from the regular Naruto characters. For example, he might be able to control a new type of chakra nature that no one has seen before.
One idea could be to create a male OC who is a fellow soldier in Shang's army. He could start as a bit of a rival to Shang, competing for the best combat skills or leadership positions. For example, he might be from a different region with a unique fighting style. As the story progresses, they could learn from each other and form a strong bond, especially during a difficult battle where they have to rely on each other's strengths.
One idea could be to create an OC (Original Character) who has a unique multimagic ability that is related to the elements but in a different way than the existing characters in Fairytail. For example, instead of controlling fire, water, etc. directly, the OC can manipulate the energy within those elements. They could join Fairytail and face challenges that test their new abilities and their loyalty to the guild.