Polyhex

Polyhex is a location on Cybertron in the Generation 1 continuity family.

Polyhex is a Decepticon-controlled province of Cybertron.

Ficiton

Marvel Comics continuity

Straxus ruled over Polyhex from his fortress of Darkmount until his apparent destruction at the hands of Blaster. The Bridge to Nowhere! The smelting pool is located near Darkmount in Polyhex, as is the Space bridge that Straxus forced Spanner to build.

Polyhex is also home to an unnamed Decepticon stronghold and Ratbat's offices. The Dead End, home to the Empties, is located here as well. The Autobase used by Perceptor's group of Autobots is presumably located in, or at least very close to, Polyhex.

Dreamwave comics continuity

After the disappearance of Optimus Prime and Megatron, the Autobots and Decepticons fractured under various factions, including Ratbat's Ultracons. Their base of operations was located in Polyhex. The War Within: The Dark Ages

References

From Teletraan I: The Transformers Wiki, a Wikia wiki.