Perhaps a plot could revolve around Zim as a girl forming different relationships. For example, she might develop a unique friendship with Dib that is different from the typical male - Zim and Dib dynamic. Or she could have a female - centered friendship that helps her navigate the human world in a new way.
Well, another option is to look on Tumblr. There are often fans on Tumblr who create and share fanfics. You can use the search function and type in 'zim is a girl fanfic'. However, keep in mind that the quality and content can vary greatly. Some might be more in - depth character studies while others could be more light - hearted adventures with Zim as a girl. But it's a good place to start exploring.
Dib, for example, would probably be both horrified and intrigued. He might see it as another opportunity to expose Zim as an alien, thinking that this strange pregnancy is part of some evil alien plot. He would constantly be spying on them and trying to gather evidence. On the other hand, Gaz's friends might be more supportive. They would offer her advice on dealing with the pregnancy, like what to eat and how to stay comfortable. But they would also be a bit weirded out by Zim's involvement.
Yes, there are. Some fanfics might explore their unique friendship in different scenarios. For example, they could be on an adventure together in the Irken Empire, facing challenges that test their loyalty to each other.
One common theme is the struggle for acceptance. OCs often face challenges in being accepted by the existing characters in the 'Invader Zim' universe, whether it's by the Irkens or the humans.
Perhaps there is some sort of magical or technological mishap. Let's say a device Zim was working on malfunctioned and affected Gaz in a way that made her pregnant. Gaz, being the tough one, is determined to figure out a solution on her own, but Zim, realizing the gravity of the situation, tries to make amends and help. They could go on a journey to find a way to reverse the process or come to terms with it and plan for the future together.
I'm not sure specifically as it could be various things. It might be a fan - made fictional story about characters named Zim and Gaz with a lemon theme. Maybe it involves some kind of adventure or relationship between them in a setting that has elements related to lemons, like a lemon - grove or a lemon - based product business.
Here's a more detailed fanfiction idea. In a world where the Powerpuff Girls have been unable to stop a powerful new villain, they seek help from Dib, who then brings them to face Zim. Zim, thinking he can use this situation to his advantage, offers to help them. But in reality, he has his own plans to take over both Townsville and the Earth. As they work together, the Powerpuff Girls start to notice Zim's true intentions. Bubbles tries to befriend Gir to get more information, while Blossom tries to keep Zim in check. Buttercup is more skeptical and constantly on guard. Meanwhile, Dib is trying to document everything for his own records, hoping to finally prove Zim is an alien once and for all.
Often, there's a theme of self - discovery. As Female Zim is a different take on the character, she might be on a journey to figure out who she is in this new form. Also, the theme of adaptation is common. Just like in the original where Zim has to adapt to Earth, Female Zim may have her own unique ways of adapting, whether it's to Earth's environment or to the reactions of the other characters around her. And there's also the theme of power. How does being female change Zim's perception and use of power? This is something that many fanfictions like to play with.
Fanfiction.net is also a good place to look. There are many users who contribute to the Invader Zim fandom, and among them, there could be some well - written zim x skoodge fanfics. Just use the search function to narrow down your search.