Another character that could be important is one of Ben's enemies who has a different reaction to his new female form. This enemy could either be more or less of a threat depending on how they view Ben now, and their interactions could drive the plot forward in interesting ways.
Another plot could involve Ben in his female form getting involved in a different social circle within the alien world. She could meet other female aliens who teach her about their culture and powers that are specific to females in their species. This would not only add new elements to the story but also expand the world - building of the Ben 10 universe.
His best friend, Gwen, might be initially shocked but then would be very supportive. She could help Ben understand the new social dynamics that come with being a girl. Kevin, on the other hand, might be a bit more awkward at first. He's used to the rough - and - tumble Ben, and this new form might throw him off. But eventually, he would come around and still see Ben as his friend and ally in fighting bad guys.
One possible plotline could be that Ben, as a girl, has to deal with the different social expectations. For example, his usual rough - and - tumble approach as a boy might not be as accepted in his new female form. He could struggle to be taken seriously when he tries to use his alien powers to save the day. Another plotline might involve his relationships. His friends might react differently to him, some being overly protective while others might be a bit more distant at first. There could also be a story where he has to learn how to handle the physical differences in combat or other situations.
When Ben turns into a girl in the fanfiction, his family relationships would be transformed. His parents would initially be confused and concerned. They'd have to protect Ben from any potential discrimination. His sister might be excited to have a 'sister' for a while and would teach Ben about girl - stuff like makeup and fashion. Grandparents might have old - fashioned views but would gradually warm up. The family would also have to deal with how outsiders view their 'new' family member, which would bring them closer together as they face these challenges as a unit.
One possible scenario could be that in this fanfiction, the change forces Kratos to view the world from a different perspective. As a girl, he might face different challenges and reactions from the other characters. Maybe the gods who once feared him now underestimate him, leading to some interesting power dynamics.
Perhaps in a parallel universe, Superman is born as a girl. This version of her grows up with different experiences and challenges. She could be more in tune with female issues in society and use her powers to fight for gender equality as well as the usual superhero stuff like saving the world from villains and disasters.
Another possibility is that Finn - now a girl - discovers new powers or abilities that were hidden before. Since in many stories, a change in gender can sometimes bring out different aspects of a character. She could use these newfound powers to fight against the villains in Ooo in a more creative way than before.
Maybe in this fanfiction, Midoriya as a girl discovers new aspects of her power. Since her body has changed, the way she channels her quirk might also be different. She could then have to train all over again to master this new way of using her ability.
In Ben 10 transform girl fanfiction, there could be many exciting plotlines. For instance, the girl might have to keep her identity a secret while still trying to save the world. This can create a lot of internal conflict as she struggles between her normal life and her heroic duties. Additionally, the fanfiction could introduce new villains who are specifically targeting her because of her unique transformation abilities, leading to intense battles and high - stakes situations.