A great fanfiction could be set in an alternate universe where Supergirl and Wonder Girl are from different dimensions but are brought together by a mysterious force. They have to learn to work together despite their different upbringings and powers. They face challenges like cultural differences in their heroic ways and learning each other's strengths and weaknesses.
There might be a fanfiction where Supergirl and Wonder Girl have a friendly competition to see who can perform more heroic deeds in a day. This could involve them racing to stop bank robberies, rescue kittens from trees, and help old ladies cross the street. It shows their competitive yet friendly relationship.
In a fanfiction, it would be cool if Supergirl and Wonder Woman met during a time - traveling adventure. They could end up in different historical periods and have to work together to fix the timeline. For example, they might find themselves in the middle of a war in the past where a powerful weapon is about to be used that could change the future. Their combined powers of super - strength, flight, and Wonder Woman's combat skills and Supergirl's heat vision would be essential to stop the disaster. This kind of plot would allow for a lot of exploration of different time periods and cultures as well as their relationship.
You can try Archive of Our Own (AO3). It has a large collection of fanfiction, and you can easily search for Supergirl and Wonder Girl fanfics using the search bar. There are different categories and tags to help you find exactly what you're looking for.
Supergirl has super strength which allows her to lift extremely heavy objects. She also has heat vision that can be used as a weapon. And of course, she can fly. Wonder Woman, on the other hand, has super strength as well, but she has unique weapons like the Lasso of Truth which can force people to tell the truth, and her indestructible bracelets which can deflect bullets.
Well, perhaps there's a plot where the body swap is part of a villain's plan. The wonder girls have to figure out how to function in each other's bodies while also trying to thwart the villain's scheme. They might initially struggle with using each other's powers or fitting into their social circles, but eventually they use their new perspectives to their advantage.
One interesting Robin x Supergirl fanfiction could be about them teaming up to save the world from a new super - villain. In this story, Robin's strategic mind and combat skills combined with Supergirl's super - powers make for an unbeatable duo.
One interesting story could be about them going on a mission together outside of National City. They face an unexpected enemy and have to rely on each other's skills. Alex uses her combat training and Maggie her detective skills to solve the mystery.
One interesting Robin the Girl Wonder fanfic could be one where she teams up with other superheroes in a new adventure. It might involve her using her unique skills to solve a mystery that the other heroes couldn't on their own.
Supergirl could potentially win. She has the same powers as Superman under a yellow sun. Her heat vision can be extremely powerful. If she uses her speed and heat vision in a coordinated way, she could overpower Wonder Woman. Also, Supergirl might be more adaptable in different environments as she has had to face various threats on Earth and in space.
There are fanfictions where Wonder Woman travels to different dimensions. In these stories, she discovers new cultures and powers. She could encounter versions of herself that have made different choices in life. This exploration of alternate selves and universes adds a whole new layer to her character, making for a really engaging read.
Another storyline might involve a misunderstanding at first. Wonder Woman and Power Girl could have different approaches to justice and initially clash. But as the story progresses, they learn from each other and end up becoming a great team. For example, Wonder Woman's more diplomatic style and Power Girl's more brash, direct approach could create some initial tension. However, when they see the value in each other's methods, they are able to work together more effectively against common foes.