Perhaps in this fanfic, the idea of their humanity being altered could also mean changes in their relationships. They might struggle with how their friends and family perceive them now that they are'more than human'. It could add a layer of emotional depth to their characters as they try to balance their new identities with their old relationships.
One interesting concept could be exploring the girls' powers in more extreme ways. For example, if they were more than human, they might have new and enhanced abilities that are not shown in the original series. This could lead to new storylines about them protecting the city from even greater threats.
The main characters are likely still the Powerpuff Girls - Blossom, Bubbles, and Buttercup. Even though they are'more than human' in this fanfic, they would remain the central focus of the story.
One idea could be a fanfic where the Powerpuff Girls go on a space adventure. They could encounter new alien species and have to use their powers in unique ways to survive in the outer space environment.
One cool thing about the older 'The Powerpuff Girls' fanfic was the expansion of their world. Writers would create new locations in Townsville or even introduce new characters that could be friends or foes. This added more depth to the original story we knew from the show. Also, some fanfics delved into the girls' relationships with each other on a more emotional level, like how they supported one another during tough times.
One idea could be a crossover where the Powerpuff Girls and Sonic team up to fight a common enemy like Dr. Eggman and Mojo Jojo who have joined forces. They could combine their powers and speed to outwit the villains.
One interesting storyline could be the Powerpuff Girls Z facing a new, super - powerful villain from another dimension. This villain has powers that are the opposite of theirs and can manipulate time, causing chaos in Townsville. Another could be a story where they lose their powers temporarily and have to rely on their wits and teamwork to save the day. Maybe they team up with some of their former enemies who also realize the new threat is too great for them to handle alone.
I'm not sure there are really 'interesting' aspects in this as it might seem a bit of an odd or inappropriate concept. The Powerpuff Girls are meant to be strong, independent superheroes, and focusing on such a strange idea like 'diaper fanfic' goes against their original positive and empowering image.
There could be a fanfic where an OC is a long - lost sister of one of the main characters in Powerpuff Girls Z. She has been hidden away for some reason and now returns with a special mission. This would create a lot of emotional drama as well as new plot twists in the story.
One idea could be an OC who has a unique power like the ability to control plants. She could team up with the Powerpuff Girls to stop Mojo Jojo from creating a giant plant monster to take over Townsville. Another plot could involve an OC from another dimension who comes to Townsville seeking help because her own world is being threatened by a similar evil as in Townsville. The OC could bring new powers and a different perspective to the fight against the villains.
One interesting concept could be the transformation process. How does a human physically and mentally change into a Pokémon? For example, do they retain their human memories? Another aspect could be the new abilities they gain. If a human turns into a Pikachu, they might discover the joys and challenges of using electricity - based attacks. Also, the social aspect within the Pokémon world is fascinating. As a former human, how would they interact with other Pokémon and trainers?
The Powerpuff Girls have many exciting stories. For example, they constantly battle against various villains like Mojo Jojo. Their origin story, where Professor Utonium accidentally created them while trying to make the perfect little girl, is really interesting. They use their unique powers such as Blossom's ice - breath, Bubbles' sonic scream and Buttercup's super strength to protect Townsville from all kinds of threats.