Perhaps the OC was sent to spy on Frieza but instead falls in love with him. The pregnancy then becomes a complication as their respective races have different views on inter - species relationships. This could create a lot of drama and tension in the fanfiction, with both characters having to fight for their love and the future of their unborn child.
For Frieza, the news of the pregnancy could make him more protective. He might start to see the OC in a new light, not just as a subordinate or a conquest. His character could shift from being purely evil to having some redeeming qualities as he anticipates fatherhood.
One idea could be to explore the emotional turmoil Kagome experiences. She might be conflicted between her feelings for Inuyasha and this unexpected situation with Touga. The story could focus on how she copes with the pregnancy in a world full of demons and magic, and how the other characters react to this news.
Frieza might initially be shocked. He's used to being a feared and powerful being, and the idea of having a family is very foreign to him. So he could be in denial at first.
Another concept could be a fusion of their powers. Imagine if Naruto was somehow able to absorb Frieza's power or vice versa. This could create a new and extremely powerful being. The story could explore how this new entity would interact with the two different universes. Would it be a force for good or would the power corrupt it? There could be a lot of internal conflict as the combined Naruto - Frieza entity struggles with its new identity and purpose.
There's also the possibility that it was an accident involving a time - traveling character. Perhaps someone from the future came back in time and accidentally caused Frieza's pregnancy through some unforeseen interaction. This would open up a whole can of worms in terms of time - travel paradoxes and how it affects the future of the 'Dragon Ball' universe.
Well, one possible plot could be about how Frieza deals with the physical and emotional changes. Maybe he has to hide his pregnancy from his enemies as it could be seen as a sign of weakness. He might also struggle with the idea of becoming a parent, considering his usually evil and self - centered nature.
The OC could be from a far - off land in Remnant that Ozpin has little knowledge of. When they join Ozpin, they introduce new concepts and fighting styles. For instance, their land might have a different way of using Dust, and they share this knowledge with Ozpin's group. This not only helps in battles but also in the research and development of new weapons and strategies. The OC's journey with Ozpin could also involve uncovering ancient secrets about Remnant that were long forgotten, and together they strive to use these secrets to gain an edge against Salem.
Since the term is rather unclear, it's hard to define specific characteristics. But generally in Frieza - related fanfiction, one might expect elements of power struggles as Frieza is a very powerful character in the Dragon Ball universe. If there's an original character (OC), there could be interactions that either challenge or complement Frieza's nature.
An interesting plot could be that the OC is the last of the Frieza race after a great catastrophe. They are on a mission to rebuild their race but in a more benevolent way. However, other races are suspicious of their intentions, and they have to prove themselves worthy of trust.
One idea could be that Lucy discovers she's pregnant during a difficult time in the magical world. Gray is initially shocked but then becomes very protective. They might face challenges from their guild mates who are worried about how this will affect their ability to go on missions.