Constructs, as the super assassins of the Mechanical System, are unlikely to be natural.
Even the Mechanical Civilization rarely produces them, after all, their destructive power is too great.
On the contrary, the Carbon-Based Civilization, for some unspeakable needs, will secretly cultivate some.
However, do original constructs exist? Actually, they do, but it's a very small probability—small, but not impossible.
Right now, here is one such example.
Construct - Gear Machine
Whether Gao Gong or Single God, the hint of familiarity they felt was actually because the two are of the same kind.
And battles between constructs are quite straightforward.
It's like two 'Mechanical Venoms' entangling each other, not only dehumanizing but also preventing the other from being human.
Gears stack madly, in thousands, in tens of thousands, frantically slicing the Möbius Ring, slicing the Scythe of Death, slicing the crazily extending arms.
