I've had this one for years now, and now I arraging it into a plot bunny.
Okay, the dream was that the human race was being attacked by horrible monsters and the Autobots were protecting them. In the dream, I was fiesty woman who despite being scared was fighting for humanities survival.
And I got pregnaunt by Optimus Prime.
I have no clue where the last part came from - I wasn't even addicted to Transformers back then - but here you go. An OC that gets preggers from Optimus Prime. And marries him. (there was a wedding cerimony, disguised as a way to promise alliance to the human/Cybertronian races; with the reason that "I" was marrying Optimus was because I was pregnaunt, in charge of the human attack force and they thought I needed support)
I think the pregnauncy would happen because the OC got too close to the Matrix of Leadership and Optimus's spark - maybe even came in contact with them. Why the Matrix did that, is up to you.
The monsters are interdimentional creatures that came from the large amount space bridge openings - so you could have some humans blaming both Autobots and Decepticons for this and acting out because of this.
The monsters are nasty and varied. Humans might make robotic monsters to fight back - using a remote to keep them controlled - and maybe used them on the Cybertronians.
I see this taking place in G1 but a bit more modern, so it crosses over to Movie verse. G1 because of the huge cast of robots to pick from and movie verse because you gotta love Optimus's form there. And his voice....-squees- Better than G1 in my option.
energetic
curious
chipper
crazy
rejuvenated
busy
blah
amused
sick