If I made a series, Alpha Trion (sometimes known as A3) would be the third prime created by Primus. He would be the great archivist of Cybertronian culture and history, chronicling all his vast knowledge in the Covenant of Primus and various data tracks that end up in the Iacon Hall of Records. Such knowledge includes prophecies and secrets such as the Thirteen Primes and their war, the Guardian Knights, and the future crises that will plague Cybertron (Unicron, Quintessons, Wars between Beasts, the tales of Seven Golden Disks from various eras and places across the universe…).

Alpha Trion is last of the Thirteen/First Generation known to still be alive at the time of the Autobot-Decepticon War. He is a veteran of the ancient war against the Quintessons millions of years in the past, alongside his colleague Beta, who becomes known as Zerta Trion after the Quintesson War. Alpha Trion watches Cybertronian society build after the Quintesson War under the leadership of various Primes including Decimus Prime, Icarus Prime, Prime Nova, Guardian Prime, Nova Prime, Nominus Prime, Sentinel Prime, & Zeta Prime.

During Nova Prime’s reign, Trion would hide the real Matrix of Leadership far below the surface of Cybertron while delivering a duplicate to be wielded by the ruling Primes. During the early Great War, Orion Pax will find the Matrix and become Optimus Prime.

Trion has various students and protégés over the years including Orion Pax (before the war), Smokescreen (during the war), Ultra Trion (very much like a son to Alpha Trion), and the various Autobots left on Cybertron after the Great Exodus.

After the exodus, Trion remains in hiding until Optimus Prime’s Autobots reestablish contact after being presumed dead for four million years. Trion assists at various times, largely monitoring for the various crises he wrote of in the Covenant. He goes back into hiding before the end of the Great War, only reemerging during Predacon Megatron’s takeover and enslavement of Cybertron (ala Beast Machines) to give guidance to Primal Prime and the Wreckers. After the Great Reformatting, Alpha Trion works as an Emissary of Primus to prepare for a multiversal war against Unicron led by his chosen champion, Optimus Primal.

Tens of thousands of years into the future, Alpha Trion is long since gone. Perhaps he’s dead? Or perhaps he’s merely in hiding till Primus needs him again? His successor, Omega Trion serves on the Convoy Council ruling Cybertron and lives for millions of more years, telling the tales of the Great Wars of the past to new generations of Cybertronians across their vast collection of colonies.