Unified Cybertron Alliance
After the end of the Great War, the Transformers lived in peace and prosperity for twenty years under the Unified Cybertron Alliance, beneath the watchful eye of the Last Autobot.
Fiction
Regeneration One
Even after Soundwave's "Neo-Decepticons" had killed the Last Autobot and seized control of the Pax Cybertronia Decommissioning Depot, Optimus Prime ordered the Cybertronian Civil Defense commander Ultra Magnus not to deploy Kup and the Wreckers for fear of damaging the Unified Cybertron Alliance. Kup and the Wreckers went in anyway but because they saved the day, Prime let them off. Loose Ends, Part 1
Notes
- It's not really clear who or what constitutes the Unified Cybertron Alliance; it's mentioned only briefly and never referenced again.