One common theme is the exploration of different relationships. Since it's a harem concept, there's often a focus on how the human character interacts with multiple pony - like characters romantically or platonically. Another theme is the adaptation of the MLP world to fit human elements, like how human values and pony values mix or clash.
One common theme is self - discovery. The OC often discovers more about themselves as they interact with the members of the harem. Another theme is friendship, as the relationships in the harem are not just romantic but also based on friendship.
A typical theme is the struggle between good and evil. The human superhero versions of the MLP characters are usually on the side of good, fighting against various evil forces. They also have to deal with the challenges of being a superhero in a human world, like hiding their identities and dealing with normal human problems. For example, in some fanfictions, they have to balance their superhero duties with school or work. This adds an extra layer of complexity to the story. Moreover, self - discovery is also a common theme. As they become superheroes, they learn more about their own strengths and weaknesses.
One common theme is the idea of the outsider. The human is often an outsider in the Equestrian world, and the romance is about them finding acceptance and love in this new place. For example, in many stories, the human has to learn the ways of the ponies to be with their love interest.
Friendship is a very common theme. Just like in the original MLP series, the human child often forms strong bonds with the ponies or other characters. For example, they might go through adventures together and rely on each other.
Common themes often include cultural exchange. Since humans and ponies have different cultures, it's interesting to see how they learn from each other. Also, discovery is a big theme. A human might discover the magic of Equestria, or a pony could discover the technology and ways of the human world. Additionally, there are themes of cooperation, where they work together to solve problems that neither could solve alone.
The theme of acceptance is also prevalent. The OC may be different from the regular ponies in Equestria, and the members of the harem have to accept the OC for who they are. Also, adventure is a common theme. The OC and the harem often go on adventures together, which helps to strengthen their relationships and also provides exciting plot points. They might be exploring new parts of Equestria or facing off against villains together.
Another theme is friendship. Just like in the original My Little Pony series, Twilight forms a bond with the human character. They support each other through various challenges, whether it's Twilight helping the human understand a magical problem or the human helping Twilight with a non - magical issue in their world.
One common theme could be friendship among the characters in the harem. Another might be Spike's growth and development as he interacts with multiple characters in an anthro - style setting.
In these fanfictions, a very common theme is adaptation. The human who has become an anthro alicorn has to adapt to a whole new set of physical abilities, like flying and using magic. There's also the theme of cultural shock. Equestria has its own culture, and the new alicorn has to understand and adapt to it. Additionally, the theme of heroism often pops up. As they gain powers, they may be called upon to save Equestria or help its inhabitants, which is a big change from their human life.
One common theme is acceptance. Since they are different species, they have to accept each other's quirks and differences. For example, the changeling's feeding on emotions might be strange to the human at first. Another theme is love that defies boundaries. Their love goes beyond what is considered normal for their respective species.