I read one where Johnny's sisters accidentally create a TG potion that turns Johnny into a girl. But the plot thickens when they realize they can't reverse it right away. Johnny then has to go to school as a girl and deal with the bullies and his crush in a whole new way. It's full of twists and turns.
There could be a fan fiction where Johnny Test is transformed into a girl due to a science experiment gone wrong. In this story, he has to deal with his sisters' reactions, which could range from shock to excitement, and also how he navigates his new identity in his daily adventures.
I'm not entirely familiar with this specific type of fanfic. But generally, in a Johnny Test fanfic, it might explore different aspects of the show's characters and their relationships. If there's a 'TG' (which could stand for transformation or something similar) aspect, it might involve changes to the characters' forms. And 'Lemon' might imply some sort of more romantic or spicy elements, but this is all speculation as I haven't seen many of these types of fanfics.
For a Johnny Test TG Fanfic, Johnny is the key character. However, adding some of the minor characters can make it more interesting. For instance, Mr. Black and Mr. White, the two government agents. They could be investigating the strange transformation that has occurred to Johnny. The school bully could also be included. Imagine his reaction when Johnny shows up to school in a completely different form. And don't forget about the various pets in the neighborhood. They could sense that something is different about Johnny and react in funny ways, which can add a lot of charm to the fanfic.
One interesting plot idea could be Johnny getting transformed into a different creature and having to navigate his daily life in that form. For example, he turns into a small, furry animal and has to deal with his sisters' reactions, which might range from shock to over - protectiveness. Another could be a TG (transformation genre) where he and his dog Dukey swap bodies and hilarity ensues as they try to act like each other. A third idea might be Johnny being transformed into a superhero - like being but with some comical side - effects, like his powers only working when he sneezes.
I'm not really sure about specific 'Johnny Test TG Lemon fanfic' as it might be a rather niche or even non - mainstream type of fanfic. You could try searching on some specialized fanfic websites like Archive of Our Own or FanFiction.net and use those keywords to see if anything comes up.
They could be part of a group of humans in a post - vampire - apocalypse world in fanfiction. Johnny's recklessness would constantly put the group in danger, but also sometimes lead to unexpected solutions. Mary would be the one to keep the group organized and come up with long - term plans. For example, she could figure out how to use the vampires' weaknesses, like sunlight or garlic, to their advantage and build a safe haven for the group.
In fanfiction, the concept of female growth hormone in relation to Johnny Test could be used in various ways. It might be part of a science - themed story where a female character accidentally takes a growth hormone and Johnny Test has to help deal with the consequences, like her growing out of control and causing chaos in the town.
One possible fanfic could start with Johnny Test waking up one day to find that Dukey has gained the ability to talk in a different language. Johnny, being the curious and adventurous type, decides to find out what's causing this. They travel to a far - off scientific laboratory where they discover that an experiment gone wrong has affected Dukey. As they try to reverse the effects, they face challenges from the scientists who don't want their mistake to be exposed. In the end, Johnny and Dukey succeed and their bond becomes even stronger.
One possible Johnny Test love story could be that Johnny falls for a new girl in town. She's smart and kind, and at first, Johnny tries to show off his crazy inventions to impress her. But things go wrong when one of his inventions accidentally causes chaos in the town. However, instead of being angry, the girl helps Johnny fix the mess. This makes Johnny realize that she's not just someone he wants to impress but someone he truly loves.