In this kind of fanfiction, the creators usually play with the characters' original traits. Karai, with her ninja skills and her own motives, could either be an ally or an adversary to Dark Mikey. For example, they might be forced to team up against a common enemy, and during that process, they start to understand each other better. It's all about exploring the uncharted territories of their personalities and the possible dynamics between them.
One possible scenario could be that Mikey gets hurt during a fight with the Foot Clan. Maybe he underestimated an opponent and got a nasty cut on his arm. His brothers would then rush to his side, with Donnie trying to patch him up as quickly as possible while Leo and Raph stand guard, ready to fend off any further attacks.
One great 'tmnt female Mikey fanfiction' is 'The Girl in Orange'. It really delves into the idea of a female Mikey having unique adventures. Another interesting one could be 'Female Mikey's Hidden Power' which shows her discovering new abilities. There's also 'Mikey: A Girl's Tale' that focuses on her relationships within the TMNT group.
It could have a positive impact by adding more diversity to the fandom. It would give representation to the LGBTQ+ community, allowing fans who identify as such to feel more included. For example, gay fans might be more excited to engage with the TMNT world knowing there is a character they can relate to on that level.
April and Casey might also be part of this fanfiction. April could use her reporting skills to try and figure out what's going on with Mikey's mutation, and Casey would be ready to fight any new threats that come along because of Mikey's changed state. Also, Splinter, as their sensei, would be guiding them all through this difficult time, providing wisdom and training to help Mikey control his new powers if he has any.
I'm not sure specifically as I haven't read this particular fanfiction. But it might be about Mikey from the Teenage Mutant Ninja Turtles getting some sort of skin condition like shellacne. It could involve his friends helping him deal with it, or his own journey in handling this new and unexpected situation.
Well, in tmnt female mikey fanfiction, the role she plays in the group is often reimagined. She might be the voice of reason more often, or the one who brings a different kind of energy to the team. Her backstory can also be unique, perhaps having different family dynamics compared to the male Mikey. Moreover, the fanfiction might explore her relationship with female characters in the TMNT universe, which is something not really explored in the original with male Mikey. This gives a whole new dimension to the stories and the TMNT world in general.
The Teenage Mutant Ninja Turtles are mainly a family - friendly franchise. Fanfiction that involves inappropriate or adult - themed relationships like'make love' goes against the general spirit of the series. So, it's not likely to be officially recognized or common.