How is metal babby formed
When A mommy robot and a daddy robot, or a bunch of mommy robots, or a bunch of science daddy robots, or some non-gendered robots, or several Parent Caste Caretaker Bots TM love each other or the glory of Cybertron Veeeeeeery much
in canon, there are multiple ways usually involving the Allspark or Primus that sparks form and then gestate in the proper metal, and other nutrient rich environments. There are the planty cyber Wombs of Bayverse, there are the stasis pods in TFA and in G1 you can build them, or they’ll literally tear their way out of the earth (well the cybertron)
in Fanon, the skies the limit, you wanna knock up a robot? Go ahead. We’ve got a guy who wrote a semi-canon fanfiction about the Autobots getting spontaneously alien pregnant writing for the comics now. No gods, no kings, IT’S OUR CITY NOW.
Xenobiology Mechpreg aside you can literally do anything, there’s precedent for it. You wanna knock em up? go ahead. Factory made? That’s a babby factory. You wanna have a robobaby magically appear in a 80-year old shut-in Indian Scientist’s tower home? Happened. You want GOD to reproduce by budding? TRUTH IS STRANGER THAN FICTION. Have fun kids and make babby responsibly.
That being said, whether you go the biological route or not, there’s some excellent people writing headcanons and metafiction here on tumblr.
@rudeicusdudeicus comes to mind, @askfirstaid also had a good one and then there’s @sashayingvaguelydownwards who did THIS FANTASTIC READ So there’s some stuff for you I guess