Vector Sigma

Vector Sigma is a non-sapient system on Cybertron that is the only source of new Sparks.

Some believe that Vector Sigma is fully sapient, but not in a way they recognize. Other's venerate Vector Sigma as part of a loose, semiformal, religion.

In any case, only Vector Sigma controls the machinery that creates new Cybertronians.
Inside its inner workings is the Origin Matrix, a unique invention of the Quintessons' most accomplished scientist Primacron.