Another aspect could be the sharing of technology and skills. The Arrow team is known for their combat skills and street - level fighting, while Supergirl has super - strength and flight. They could learn from each other. For instance, Oliver could teach Kara some hand - to - hand combat techniques, and in return, Kara could show Oliver how to better use his gadgets in aerial situations.
One interesting crossover could be the characters teaming up to fight a common supervillain. For example, Lex Luthor from Supergirl's world could team up with some of Arrow's villains like Deathstroke, and Team Arrow and Supergirl would have to combine their skills to take them down.
Kara Danvers (Supergirl) is also very popular. Her superpowers and kind - hearted nature make her a central figure. Fans love to see her interact with the more grounded characters from Arrow, like when she tries to understand their more human problems despite her god - like powers.
One great storyline could be them teaming up to fight a common enemy like a powerful meta - human who is causing chaos in both of their cities. They could start off not trusting each other fully due to their different methods but then grow to respect one another as they see the value in each other's skills.
One interesting crossover could be Percy using his water powers to help Supergirl when she's facing a fire - based villain. Maybe she's having trouble with a foe who can control intense heat and Percy steps in to douse the flames with his ability to manipulate water.
In a 'Team Flash meets Supergirl' fanfiction, there could be an epic team - up. The Flash might use his super speed to save Supergirl from a kryptonite - powered trap. Then they could join forces to fight a common enemy like Lex Luthor or an alien invasion. The scientific minds in Team Flash could also help Supergirl understand some new aspects of her powers.
Supergirl would be really interesting. Her alien origin and her super strength, along with her ability to fly, would make her stand out. She could bring a new dynamic to Team Flash with her different set of powers and her more idealistic view of heroism, which might contrast with some of the more street - level concerns of Team Flash.
Well, a great plot for Supergirl Arrow crossover fanfiction could be centered around a common enemy from another dimension. This enemy has technology that nullifies Supergirl's powers and Arrow's skills, so they have to rely on their wits and each other's unique strengths. For example, Supergirl could use her heat vision in a creative way to expose the enemy's weaknesses while Arrow uses his archery skills to set up distractions. They could also meet some interesting characters from the other dimension during their adventure.
One idea could be that an alien threat emerges which requires the skills of both Arrow's team in Star City and Supergirl in National City. They have to combine their combat styles, with Arrow's more grounded and stealthy approach and Supergirl's super - powered attacks. For example, Arrow could use his trick arrows to create distractions while Supergirl takes on the stronger alien foes directly.
One idea could be that a powerful villain threatens both Star City and National City simultaneously. Arrow and his team are struggling with the more street - level threats in Star City, while Supergirl is dealing with the super - powered aspects in National City. Eventually, they cross paths when the villain's plan connects the two cities. For example, the villain might be using some sort of technology that is affecting the meta - humans in National City and also causing chaos in Star City's criminal underworld.
A great storyline could be about a mystery that spans both their cities. They start investigating separately but soon realize they need each other's help. Team Arrow has the skills to infiltrate dangerous locations, while Team Flash can quickly travel between the two cities to gather information. There could also be a storyline where a powerful and ancient artifact is discovered, and both teams want to keep it safe from falling into the wrong hands. They would need to overcome their differences in approach to protect the artifact and the world from its potential misuse.
In fanfiction, when Team Flash meets Team Arrow, there could be an exchange of superpowers knowledge. The Flash's speedster abilities might amaze the members of Team Arrow, while the archery and combat skills of Team Arrow could be something new for Team Flash to learn from. Maybe they would team up to fight a common and extremely powerful villain that neither team could handle alone.