The story is told a third time in the United States Marvel series by Primus when he gathers all his children together to prepare for Unicron's coming. In this telling, Unicron predates the current universe and destroyed the previous universe. He slept peacefully, alone in the void of un-creation that remained, until fragments of the old universe that he had overlooked reacted, causing the Big Bang and birthing the current universe. The "sentient core" of this new universe recognizes the threat that Unicron poses, and so creates Primus to counter his evil and be the guardian of the new creation.