#love thinking and speculating about how major biological functions work for underdeveloped characters/species /gen

[tachyon-omlette]

...and some more about Eda, because I cannot shut up about him

(slightly realistic nervous/circulatory system diagrams under the cut)

so I was pondering the concept of Unicron (and, by extension, Eda) eating planets but having dark energom for "blood". because with most transformers they drink normal energon and then that's their blood (sort of), so if Unicron and Eda eat planets then where does that stuff go, and where does dark energon come from?

there's probably already an explanation for this, but still, here's my take:

Dark Energon is the "lifeblood of Unicron" in that it supports all major system/anti-spark-related functions, and is naturally distilled from the entropy of the universe (because robot god powers). it maintains the proverbial nervous system and channels energy into various supernatural outputs (ex. Eda's emapth powers); when the lines are ruptured it takes time to naturally replenish, and if enough dark energon is lost it can prevent the use of certain abilities and functions (and for Eda in particular, a dark energon line rupture is extremely painful, therefore this system is very heavily armored)

planet-remnants are stored in the Molten Metals system, which manages self-repair, general upkeep, and temperature regulation (because space is very cold, and insulative armor is not everything). since the lines of this system are much more plentiful and often closer to the surface, damage dealt isn't exceptionally painful and on the small scale is essential for staying healthy - the downside is that this system requires regular replenishment, especially if lots of metals are lost to self-repair. (it's also noteworthy that this system is helpful in staving off corrosion and corrosive illnesses, when properly utilized - for example, scrubbing off oxidization allows for those oxidized metals to be replaced, which is an important thing to know when living within an atmosphere and wanting to still have functioning joints)

I might refine this with more specifics later, but that's my theory on how it works