The idea of an unlikely alliance in a Batman Robin Ray fanfic can be really exciting. Batman is used to working alone or with Robin in the dark alleys of Gotham. Ray might be from a different kind of world, maybe with more of a scientific or otherworldly origin. When they come together, their different fighting styles and mindsets would clash at first. But as they get to know each other better, they realize that they can use each other's strengths. For instance, Ray's knowledge of advanced technology could help Batman upgrade his gadgets, while Batman's combat experience could teach Ray how to better defend himself in a fight.
In Batman and Bruce Banner fanfiction, there could be a plot where they first start as enemies. Batman might see the Hulk as a dangerous uncontrollable force, while Banner might see Batman as a self - appointed judge. But as the story progresses, they realize they have more in common than they thought. They both have a dark side to them, Batman with his brooding nature and Banner with his inner struggle against the Hulk. Their journey from enmity to alliance could be a great story.
A possible plot in the fanfiction could be that Batman gets lured into Wakanda due to some strange technology or mystery related to a WayneTech experiment that has connections to Wakandan Vibranium. There, he meets Black Panther, and they initially have a tense encounter as they don't fully trust each other.
Well, a simple fanfic could be that there's a misunderstanding. The Hidden Leaf Village suspects Shion of something bad, but Naruto and Hinata believe in her innocence. They team up to prove that Shion is not a threat. Along the way, they discover a plot by an outside force to frame Shion. Naruto uses his combat skills, Hinata uses her Byakugan to find clues, and Shion uses her spiritual powers to help them uncover the truth.
One interesting aspect of a Batman Robin Ray fanfic could be the dynamic between Batman and Robin as they team up with Ray. Maybe Ray has some unique powers that complement Batman's detective skills and Robin's acrobatics. They could face a new villain in Gotham City that requires all their combined abilities to defeat.
Perhaps a fanfic could focus on the relationships within the team. How Robin interacts with the other members of Young Justice, and how Ray fits into the dynamic. Batman's influence on Robin could also be explored, like how his training affects Robin's actions during team missions.
A simple fanfic could be about a training session. Robin is training with the Young Justice team and Batman asks Ray to come in and teach them some new techniques related to his powers.
Well, in such a fanfic, an unlikely alliance could form. Maybe Hamilton realizes that the King has some valuable insights on governance, despite their differences. So he decides to work with the King on certain diplomatic matters. This would shock everyone around them as they are supposed to be on opposite sides.
Another interesting alliance could be between Ron and Keroberos. Ron, with his love for food, might be constantly bribing Keroberos with treats to get information about the Clow Cards or to ask for his help in some comical situations. Keroberos, being a bit of a glutton himself, would be easily swayed by Ron's offerings.
A simple alliance in this fanfiction could be that Baiken helps Naruto with her sword skills. Naruto is mainly a ninjutsu user, so her sword - based combat knowledge could be a great addition to his fighting repertoire.
In fanfiction, Neji and Sakura could form an unlikely alliance against a common foe within the Hidden Leaf Village. This could be due to some political intrigue where they have to trust each other despite their different personalities.