Prysmosian

Prysmosians are the dominant species of the planet Prysmos. Formerly a technologically-advanced civilization, a solar realignment caused their society to lapse back into a primitive state, eschewing science to rely on the magic of their forebears.

Like some other aliens, they superficially resemble humans.

Fiction

IDW Generation 1 continuity

The Prysmosians had gone through cyclical periods of scientific advancement and regression; though once content to rely on the power of the "Arcana Vast," the existence of sorcery was forgotten as society advanced, and eventually, its former practitioners were spurned as holdovers of a dead religion. In turn, the wizard Merklynn sought to undo the hold technology had on his people, and cast a spell that brought Prysmos' three suns into alignment, shutting down all technology on the planet and ushering in a new Age of Magic.

This period of time lasted until the suns moved back out of alignment, which tore the planet asunder. Only a handful of survivors escaped the cataclysm; Merklynn, hoping to atone for his mistake, travelled to Earth in the hopes of finding a new world to colonize, and eventually succeeded some seventy years later when he raised the city of New Prysmos beneath Cybertron, which soon came to house the remainder of the Prysmosian species. Schismatic