A bulleted list of some of the silly world building for The Whispered World that has been making us grin in the server (feel free to add on @fourphoenixfeathers @serotoninisheldinkiwis):
Visitors and Intruders are named as such based on behavior, not faction- Visitors are generally polite to neutral, don't cause too much direct or collateral damage, and usually go along with road rules and local law. Intruders tend towards being antagonistic or violent, don't care much about causing damage or will cause damage on purpose, and some go out of their way to purposely flout rules.
All Cybertronians have a distinct scent that they aren't aware of having that gives them away as non-native, a sort of burnt carbon ozone scent from their non-Earth metals degassing in the Earth atmosphere. There's also a distinct faction scent due to different chemical make ups of sanitizing and cleaning materials- Artificial raspberry is Autobots, lemon lime is Decepticons.
All Cybertronians can change their patterning and colors basically at will, but depending on their frame type and dedicated social role, there's certain ranges they are limited to- Ex. Optimus is always pretty bright because as a Prime he's meant to be seen, Ratchet's medic colors are a specific uniform for his role as a medical professional, Bumblebee can change is actual alt pretty drastically but his colors are limited for identification friend v for, etc.
There is a Discord server in universe where people talk about various sightings and there is a section on the server where all the thirsty hoes hang out and gush over the few grainy images of bot and alt forms. We see you planespotter69 and carlover.
Some of the Bots and Cons are aware of and participate in the server. They have no idea other Cybertronians are present.
In universe, humans have nicknames for all the known Visitors, and some humans have befriended the Visitors and their locations become hot spots/neutral zones where both Bots and Cons hang out some times.
There is an in universe YouTube channel where a rando living out in the boontoolies gives free washes to Visitors that let him film them. Their channel is one of the only places where actually clear imagery of the Visitors can be found.
Wheeljack is a fucking gremlin who keeps ransacking junk and scrap yards for parts and he keeps BITING THINGS WHY YOU WEIRDO.
All Cybertronians like to burrow and be close to or under ground, flyers are rare for a reason and they have a whole separate culture compared to ground mechs (this is largely related to how Primus is their planet and the ground is therefore sacred as God's physical body).
There may or may not be a crashed ship buried between the Tigris and Euphrates rivers where a very old, very special artifact crash landed and unwittingly helped shape humanity as it evolved.
