Cyberman conversion fan fiction often focuses on the process of turning a human into a Cyberman in the Doctor Who universe. It can explore the horror, the loss of humanity, and the new existence within the mechanical body.
I'm not sure of specific titles off - hand, but you can check out fan fiction websites like Archive of Our Own. There's likely to be a good selection there.
Cyberman fan fiction often explores unique and interesting concepts. In the case of Cyber Lieutenant, it could be about a character with a special rank among the Cybermen. It might focus on their journey, their internal conflicts, like how they deal with any remaining human emotions while being part of the Cyber race. Maybe they are on a mission that challenges their loyalty to the Cyber collective.
The Cyber Lieutenant Cyberman fan fiction is interesting because it allows for exploration of power dynamics. As a lieutenant, they have a certain level of authority. Writers can play with how this authority is used within the strict Cyber hierarchy. They could be a force for good or bad, depending on how the writer wants to portray them. It also gives a chance to explore the relationship between the lieutenant and other Cybermen, as well as their view on non - Cyber beings.
Well, 'The Next Doctor' has an interesting take on the Cybermen. It has a great plot that involves a false Doctor and the Cybermen's evil plans. The story is full of twists and turns. Then there's 'Closing Time', which while not solely about the Cybermen, has an engaging encounter with them. It shows how menacing they can be even in a more comical - seeming scenario. Also, 'Nightmare in Silver' is a great cyberman story. It shows the Cybermen's ability to adapt and upgrade in a really scary way.
In my opinion, 'The Tomb of the Cybermen' is a great one. It really shows the mystery and threat of the Cybermen. The atmosphere in the story is really spooky, and the way the Cybermen are presented as these cold, mechanical beings intent on conversion is really well - done.
Yes, there are some. However, they are often quite controversial as conversion therapy is widely regarded as unethical. These books may explore the experiences of those who have been subjected to it, or the ideological battles surrounding it from a fictionalized perspective.
I'm not aware of many mainstream ones specifically, but some independent or lesser - known works might exist. You could try searching in specialized bookstores or online platforms that focus on niche or controversial topics.