In "Human Error," we've seen Optimus and his team being changed into human beings after Soundwave drugged their drinks. Even after the Autobots do look human now, are they still robots on the inside?
^ this. man, it was just 6 minutes so it's not hard to remember what happened. Ratchet xrayed/scanned Optimus and we saw he's bone structure and Ratchet clearly said that they're 100% humans and it's possible they're kinda dreaming.
Spoiler alert: Spoiler Characters are still robots. Spoiler Their minds are downloaded into VR simulation Spoiler Their bodies are out cold in hq or in soundwave's lair Spoiler It's why prowl is in his holo cop form Spoiler This was mentioned in a previous thread
i think it's not grey, it's more like lighter brown or something like this and after seeing their human versions i guess it's like this Optimus - about 25-30 yo Ratchet - about 50 yo Prowl - about 40 yo Bumblebee & Bulkhead - teenagers, something like 15, 16 yo