Darkseid could be a main antagonist. His thirst for power and control could put him in direct conflict with Wonder Woman and Power Girl. He might see their combined strength as a threat to his plans of universal domination.
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.
Yes, there are. For example, some fanfictions might focus on their team - up adventures, where they fight against common foes in the DC universe. They could combine their unique powers and skills to take on powerful villains.
You can try some popular fanfiction websites like Archive of Our Own (AO3). It has a large collection of DC Comics - related fanfictions, and you're likely to find some great stories about Wonder Woman and Power Girl there.
One common theme is friendship. Since they are both powerful female characters in the DC universe, many fanfictions explore how they form a bond. For example, they might start as strangers or even rivals and then become friends through shared experiences.
One interesting storyline could be a team - up against a powerful new villain who is threatening both their worlds. They combine their unique powers, like Power Girl's super - strength and flight with Wonder Woman's combat skills and Lasso of Truth, to take on the baddie.
One great 'dc comics wonder girl x power girl fanfiction' is 'Allies in Action'. It shows them teaming up against a powerful villain in Metropolis. The story does a great job of portraying their different powers and how they complement each other in battle.
One idea could be that Sonic accidentally gets transported to the world of Wonder Girl. He teams up with her to stop a common enemy that is threatening both their worlds. Maybe an evil scientist who wants to steal Sonic's speed and Wonder Girl's powers.
You can find 'Batman x Wonder Woman Fanfiction' on popular fanfiction websites like Archive of Our Own (AO3). It has a large collection of works in this category, with different takes on their relationship. There are also some on Fanfiction.net, although the quality can vary more there.
There's also 'Batman and Wonder Woman: The Unlikely Alliance'. This fanfiction takes a different route by starting with their initial distrust of each other. But as the story progresses, they discover they have more in common than they thought. It's full of action and has some great character development moments for both of them.