Following a recent request, I've now uploaded the fifth faction, inspired by the Tholians from the original Star Trek series. Again to avoid nastygrams from CBS, I've labeled them "the Webbians".
The bases on these are roughly 12.5mm from flat side to flat side, to give you an indicator of how small these are.
And a second render in Frosted Ultra Detail:
I'm actually almost done with the next fleet, which I'm calling the AstroGators. Stay tuned!