Alpha Trion (aka A-3) is one of the oldest living Transformers, and with that age comes a nuanced understanding of his race and their place within the universe. In his youth, he was instrumental in establishing Cybertron as an independent galactic power, and in his older years, he has found a comfortable role in serving as advisor to other Transformers.

Though Alpha Trion rarely takes part in the battles of the Great War, he is firmly on the side of the Autobots and serves as a mentor and guide, especially to Optimus Prime and Elita One. He is an enigmatic old robot, and in many realities he is the guardian of Vector Sigma and the custodian of its circuit key. His sage-like manner paints him in almost a mystic tone, and possible connections between Alpha Trion, Primus, and the history of Cybertron itself have boosted him into legendary status.