Miliarian

The Miliarians are a sentient species that live on Miliarium. They are sufficiently technologically advanced to possess nuclear power plants and build architecturally complex cities.

Fiction

2005 IDW continuity

During a conflict with Rust Giants, a Miliarian city near a nuclear power plant was liberated by the Autobots of the Lost Light. The events were almost immediately reported on the Galactic Bulletin. How Bright Their Frail Deeds