Primus is Unicron's sibling, and the creator god of the Transformers. His body is the planet Cybertron, and the mega-computer Vector Sigma serves as his internal mainframe. Though he rarely meddles in the affairs of his creations, he has gifted a portion of his life force within the Matrix, which determines the leader of the Autobots. Prophecies of a war to come were written down in his holy covenant as well. The spark of each Transformer is a small piece of Primus' essence, and together they form his life force, the Allspark. Primus was created by an even greater being called "The One"