Archon

Archon was one of the Cybertronian colonies during the Golden Age and was the first to receive a replica Well of All Sparks due to its already energy rich nature.

It was ruled by Metalhawk.

Fiction

The Covenant of Primus

Archon was one of the multitude of worlds colonized after the expulsion of the Quintessons from Cybertron at the end of the Age of Wrath through the use of space bridges. It was first world to be given a new Well of All Sparks to generate new life as it was already energy rich. It was given this new well via a ceremony started by Bluestreak.

Archon was later isolated from Cybertron after the Rust Plague spread there and the destruction of the space bridges, and was the site where Prowl and Bluestreak parted ways. The Covenant of Primus

Animated cartoon continuity

Archon was a neutral robotic planet on the edge of Autobot space in the Milky Way. The Complete AllSpark Almanac

Ask Vector Prime

The Protectobots once lived on the colony world of Archon, but as the colony slowly began to fail they succumbed to stasis lock. They remained that way until Omega Supreme chanced across the ruins of the planet and brought them back to Earth. Ask Vector Prime, 2015/09/21