Prima

Prima was the first Transformer. Created by Primus, he was appointed the Warrior of Light and given the legendary Star Saber sword with the Matrix of Leadership in its hilt.[1][2] Chosen to lead the Thirteen against their eternal enemy Unicron, he and the rest of the Thirteen were made stewards of Primus' planetary form, Cybertron. Its planetary engines carried Cybertron across space to Unicron, where they sought battle, but Prima and the Thirteen were betrayed by one of their own, a being who would be known as The Fallen.

Despite this betrayal, and despite the Thirteen's apparent demise, The Fallen and Unicron were defeated and sucked through a black hole and into another dimension.[3]

It is uncertain what relationship Prima has, if any, to Primon, another early Matrix bearer.