Uhhh I’m pretty sure in most continuities Cybertronians start out as adults and never have a “child” stage. There are a couple exceptions like in some of the older sideline cartoons as well as Bayverse somehow? But there aren’t any “children” in the Michael Bay movies besides the Decepticons’ weird egg larvae and the baby Dinobots, both of which are never given a full explanation in how they’re conceived.
However, in the Aligned, TFA, and IDW continuities I’m pretty sure most Cybertronians come from hotspots? (Unless we’re specifically in IDW, then half the population is cold-constructed and Springer is a weird science baby, however they also start out as adults. Also I think Soundwave was made by Sari in TFA)
I’m really not the person to ask though because I’m just a lowly scrub who only read IDW and looked up most of my Transformers info on TFWiki.









