Saber is also often paired with pseudo servant shirou. Given their connection in the main storyline, fanfic writers like to explore their relationship further. It could be a partnership where they fight together, or there could be a more emotional bond that develops between them in the fan - created scenarios.
Rin Tohsaka is a common character paired with pseudo servant shirou. Their relationship in the original series makes it natural for them to be paired in fanfiction as well. They can have different types of interactions, from friendly banter to more serious discussions about their roles and the Grail War.
One interesting concept could be the exploration of Shirou's character in a different servant - like form. It might show new powers or abilities that are not seen in the original story. For example, his combat style could be enhanced or altered in unique ways.
One common character paired with 'female Luffy' is Zoro. In some fanfictions, their relationship could be more of a romantic nature. Zoro might be the first one to notice the changes in Luffy when she reveals her female side, and then they start to develop a deeper connection. Their dynamic would be different from the original, with more of a romantic tension added to their usual banter.
Optimus Prime is sometimes paired with baby Soundwave. Their interactions can be really interesting as they come from opposite sides. Optimus might take on a mentor - like role towards baby Soundwave, teaching him about things like morality and the value of life.
Stan can also be paired with Kenny. Stan's more moral - centered character can contrast with Kenny's somewhat nihilistic view of his own mortality. In a crossover with a post - apocalyptic world, Stan might be trying to find a way to save humanity while Kenny is just along for the ride, but still manages to survive in the most unexpected ways.
Cheelai and Lemo from the Broly movie might also be paired with the reincarnated Broly. They could act as his guides or friends in the new world he finds himself in, helping him navigate the complex politics and power dynamics of the Dragon Ball universe.
Naruto can also be paired with Sakura in these fanfictions. Since they are such close friends in the original, in a reincarnation scenario, their friendship could potentially turn into something more romantic. They could support each other in different ways than in their past lives.
Hermione is often paired with Harry. She might help him study and understand the animagus transformation better. Also, Ron could be there, providing his usual comical relief and loyalty. They could get into all sorts of adventures together with Harry as an animagus.
Indra and Asura are also characters that are frequently paired with Hagoromo in fanfiction. These pairings often explore the family dynamics more closely, such as Hagoromo teaching them new skills or them helping Hagoromo in some way that was not shown in the original series.
Sometimes Jungkook is paired with Taehyung. They could be partners in a fight against evil supernatural entities. Their bond might be strengthened through shared experiences and mutual understanding in the supernatural world. There are also fanfictions where they discover some unique connection between them, like a telepathic link.
Madara is quite commonly paired with Hashirama in crossover fanfiction. Their complex relationship in the original Naruto series makes for interesting scenarios when they are placed in different crossover settings. They could be forced to work together against a new threat or their rivalry could take on new dimensions in a different world.