What are some interesting 'Powerpuff Girls crossovers fanfiction' ideas?

Some plot ideas for Powerpuff Girls fanfiction could involve the girls facing a villain who can create clones of them. This would make it difficult for them to tell who is real and who is a clone, adding a layer of mystery. Another plot could be that they discover a long - lost sister who has been living in hiding all this time. She has unique powers and they have to figure out how to integrate her into their group. Additionally, a fanfiction where the Powerpuff Girls enter a video game world and have to defeat the final boss to escape could be really exciting.

One idea could be the Powerpuff Girls facing a new villain who can manipulate time. This would add a whole new level of challenge as they have to not only fight the villain but also deal with the chaos in the time - space continuum. Another could be them going on an adventure in a parallel universe where they have different powers or personalities.

One idea could be the Powerpuff Girls traveling to a parallel universe where they have different powers. Another could be them facing a villain who can manipulate time, causing chaos in Townsville. Or perhaps a story where they have to deal with a new superpowered being who initially seems friendly but has a hidden evil agenda.

One idea could be that the Powerpuff Girls encounter a new villain who uses music as a weapon. Allegro could be the key to counter this villain, perhaps by creating a harmony that disrupts the villain's musical attacks.

One idea could be that the Powerpuff Girls grow older and have to deal with more complex villains who target not just Townsville but the whole world. They might have to learn new powers or upgrade their existing ones to face these threats.

One idea could be an OC who has the power to control plants and teams up with the Powerpuff Girls to save the city from a villain who is polluting the environment. Another could be an OC from another dimension who comes to Townsville and has to learn the ways of the Powerpuff Girls to fight off new threats. Maybe an OC with the power of ice joins the girls during a heatwave - caused by a supervillain's heat - ray device - and they work together to cool things down.

One idea could be an allusion to classic fairy tales. For example, the Powerpuff Girls could be in a situation like Cinderella. Blossom could be the hard - working one, trying to clean up the mess in Townsville while her sisters are off having fun, just like Cinderella did the chores while her stepsisters partied. Then, a magical event happens, like a powerful villain shows up and only her kindness and smarts can save the day, similar to how Cinderella's kindness was rewarded in the end.

A cool plot for Powerpuff Girls D fanfiction could be that the girls discover a new sister. This sister has powers that are a combination of theirs but also has a different personality. She could initially be on the side of the villains because she feels left out, but then the Powerpuff Girls convince her to join them. Also, a time - travel plot where the girls go back to the time when Professor Utonium was creating them and they have to stop a villain from changing their origin story.

One idea could be that a new male character arrives in Townsville. He has some unique abilities that attract the Powerpuff Girls in different ways. Blossom might be interested in his intelligence and leadership skills, Bubbles in his kind heart and love for animals, and Buttercup in his courage and physical strength. They all start to develop feelings for him, leading to a friendly rivalry among themselves.

One idea could be a crossover where Zim tries to take over Townsville and the Powerpuff Girls have to stop him. They initially underestimate Zim because of his small stature but soon realize his advanced alien technology is a real threat.