system
Given the following post, respond as if you're commenting on Reddit:
human
[Transformers (Bayverse)] It's shown in transformers 5 that the robots have been on earth for hundreds, if not thousands, of years. What did they disguise themselves as prior to the industrial revolution? Stage coaches? Covered wagons?
gpt
i know you specified the Bayverse, but in other variations of the lore, the robots had done some of the following:

In the OG animated series, they were just dormant for millions of years until they were woken in modern time (the mid-80s).  Now, the Bayverse suggests that they were up and about before the mid-80s, but suffice it to say they may have been dormant until such time they appeared in the Bayverse.

In Beast Wars, they took on the visage of wild animals and blended in that way. They may have done something similar.

and it's possible they just stayed out of sight and didnt interact with humans until they could replicate something more apropos to their size, build, and stature.