So I've been trying to figure out the process of the creation of the Transformerss and this is what I've got so far for my theory/idea. First the Seeds are detonated across populated worlds to create the necessary amounts of Transformium. Second, they use the Allspark to "build" the raw Transformium into a Cybertronian. The Cybertronian is little more than a drone at this point. They use the drones to build Solar Harvesters across the planets the Creators have ruined to make the raw metals, and harvest Energon from the sun to fuel the Cybertronians. Finally, they use the Matrix to give the Cybertronians a spark, or a soul, turning them into sentient machines instead of drones. I didn't account for the Allspark drones being feral, since we've never observed that happening anywhere but Earth, where Sector Seven reverse engineered technology from Megatron to create the modern age. I figured that Megatron's presence was still in the technology they created, on a smaller scale and less extreme like Galvatron, or perhaps the Allspark recognized a form of cybertronian tech despite it being reverse engineered, and was still able to interact with it anyway. Besides, if the Allspark ALWAYS created feral drones, the Creators would probably have not continued trying to make Transformers to begin with since they couldn't tame them enough to use the Matrix or anything without getting close and injured.