A great plot idea is a crossover centered around a new super - weapon. Maybe some ancient weapon that was lost in the Arrow - verse is found by Hydra in the Agents of Shield world. So the two teams have to work together to retrieve it before it's used for evil. Another popular one is a character - based plot. For instance, if Thea Queen discovers she has some sort of power that is related to the Inhumans in Agents of Shield. She then goes to them for help and that starts a whole series of events that brings the two groups together. Also, a plot where the two teams are forced to compete for a valuable resource, but then realize they need to work together to keep it from falling into the wrong hands can be really interesting.
One idea could be that some of the Agents of SHIELD team get transported to Starling City where they cross paths with Arrow's team. They could team up to fight a common enemy like a meta - human terrorist group that has access to both high - tech weapons and ancient magic.
Well, a really interesting plot might involve the Agents of Shield trying to recruit the TMNT for a special mission. Since the turtles have unique skills and knowledge of the sewers and the underbelly of New York, they could be valuable assets. Or perhaps a Kraang invasion occurs in the Agents of Shield universe, and the Agents have to work with the turtles to stop the alien menace. The turtles could teach the Agents some of their ninja fighting techniques while the Agents share their high - tech weaponry and strategies.
Daisy Johnson from Agents of SHIELD and Oliver Queen from Arrow would also be an interesting duo. Daisy has her Inhuman powers and combat skills, while Oliver is an expert archer and martial artist. They could fight side - side in a big battle against a powerful villain.
One idea could be that the Agents of Shield discover a hidden threat that is related to an old Avengers enemy. For example, a Hydra remnant has found a way to re - activate some of the technology left behind by Ultron. The Agents of Shield then have to team up with the Avengers to stop this new threat. They could combine their skills, like the Agents' espionage and the Avengers' super - powers.
One idea could be that the Agents of Shield discover a new group of Inhumans with a unique power that could be a threat or an asset. They have to decide whether to help them control their powers or contain them. Another could be an Inhuman from the Inhumans group joins the Agents of Shield to help fight a common enemy, like a new alien threat. And a third idea is that some technology from Agents of Shield accidentally causes a power surge among the Inhumans, leading to chaos that both groups must work together to resolve.
One idea could be that the Agents of Shield discover a new threat that is related to an old enemy of the Avengers. They have to team up to figure out how to stop it. For example, a hidden Hydra cell has found a way to re - activate an old weapon that was once used against the Avengers.
Perhaps a virus is released that targets enhanced individuals. The Avengers are directly affected, but the Agents of Shield has some research on a similar virus from a previous mission. They team up to find a cure. Along the way, they face off against a group of mercenaries who are trying to use the chaos to steal valuable technology from both the Avengers and Agents of Shield.
Well, perhaps there could be a crossover where a villain from The Flash, say Reverse - Flash, teams up with a Hydra agent from Agents of Shield. This alliance would be a huge shock as they combine their powers and knowledge. Reverse - Flash's speed and ability to manipulate time along with Hydra's devious plans could create a very difficult situation for the heroes from both universes to handle.
To write a good character interaction in an Arrow and Agents of Shield crossover fanfiction, first understand each character's personality. For example, Oliver Queen is very brooding and focused on justice in his own way. Agents of Shield characters like Coulson are more about the big picture and following S.H.I.E.L.D. protocol. So when they interact, there might be some clashes at first. But also find common ground. Maybe they both care about protecting the innocent. Let the characters learn from each other. Oliver could learn about the larger scale threats that Agents of Shield deals with, and Coulson could see the value of Oliver's more hands - on approach.
Well, a common plot idea in Agents of Shield Inhuman OC fanfiction is an OC with a power related to energy manipulation. For example, they can absorb and redirect various forms of energy. This can lead to interesting scenarios where they have to face off against enemies with powerful energy - based weapons. Another plot could involve an Inhuman OC who has the power of invisibility but with a twist, like they can only be invisible when they are completely still. This creates a lot of tension and stealth - based storylines. Also, an Inhuman OC with the power to heal others could be a great plot device. They might struggle with the limits of their power and the moral implications of who to heal and when.