Alpha Trion was Optimus Prime's mentor at Iacon and served as the master archivist. He was the one who proposed Optimus (called Orion Pax at the time) to the high council to become a Prime. Smokescreen was one of his guards and a close friend after Optimus left for Earth. He was also the one who launched the Iacon relics to Earth hoping that Optimus would find them.