Weird thought *spoilers*
In the Unicron arc, we learned that Unicron is the very heart of Earth. Ratchet says at one point that the land, metals and minerals of the planet are extensions of the Chaos-bringer.
Well, humans have about 65 trace elements in their bodies. These metals, like silicon (found in our skin), boron (brain, i think?) gold (toenails, says Google), and other metals are essential in human body functions. While only traces of these elements are in human bodies (hence, trace elements), wouldn’t it be cool if that makes humans extensions of Unicron too?