A common theme could be the transformation aspect. In yaoi fanfiction about the Constructicons, their ability to transform might be related to their emotional states in the relationship. Maybe when they are in a more affectionate state, their transformation process is different or has a special meaning. Also, themes of power and strength could be explored in the context of their relationship, like how they use their power to protect each other.
One common theme might be the relationship dynamics between the Constructicons themselves. It could explore their loyalty to each other in a different, more romantic or emotional context. For example, how they support and care for one another in a yaoi - inspired relationship.
I'm sorry, I'm not really into that specific type of fanfiction, so I can't recommend any directly. But you can try searching on some popular fanfiction websites like Archive of Our Own (AO3), they usually have a wide variety of fanfictions and you might be able to find some related to transformers constructicons x yaoi there.
Often, there's the theme of adaptation. How the characters from Harry Potter, who are used to a world of spells and potions, adapt to the mechanical and technological world of Transformers. And vice versa for the Transformers characters in the magical world. In terms of the yaoi aspect, themes of love and attraction between male characters from the two different universes are common. It might also include themes of acceptance, as these relationships might not be the norm in either of the original universes.
One common theme could be the exploration of an unlikely relationship. Skywarp has his own character traits in the Transformers Animated universe, and in Yaoi - themed fanfiction, his relationship with another character often involves themes of loyalty and devotion that go beyond the typical Transformers' relationships. Another theme might be the struggle against the norms of their own society. Since Transformers have their own hierarchies and rules, a relationship like this might face opposition, which can be a major plot point in such fanfictions.
One common theme could be the exploration of an unexpected or forbidden relationship between Soundwave and another character. Another might be the struggle to balance their duties as Transformers with their new - found romantic feelings.
One possible theme could be forbidden love. Since they are part of a team, their relationship might be frowned upon by some in the Autobot group. Another theme could be self - discovery. As they explore their feelings for each other, they also learn more about themselves.
In these types of fanfiction, a common theme might be the adaptation to unexpected situations. The concept of mechpreg in the world of Transformers is quite out of the ordinary. So, the characters, especially those in a Yaoi relationship with Shockwave, might have to adapt to this new state. There could also be themes of love and loyalty, as they face challenges together, whether it's from other Transformers or just the difficulties that come with their unique situation.
In these types of fanfictions, a theme of power dynamics is quite common. Predaking's great power means that any relationship he enters into will have an element of power play. Additionally, themes of loyalty and betrayal can also be present. If he forms a relationship, how does that affect his loyalty to his own kind? And what if that relationship is seen as a betrayal by others in the Transformers world? There are many such complex themes that writers can explore.
Typically, in Transformers Overlord x Yaoi fanfiction, there would be a focus on the relationship between Overlord and another male character. It might explore themes of love, loyalty, and power dynamics within the context of the Transformers universe.
One common theme is self - discovery. The OC often starts out not knowing their full potential and through their experiences with the Transformers, they learn more about themselves. For example, they might discover hidden strengths or abilities.
One common theme could be the exploration of the complex relationship between the two characters. Another might be the power dynamics.