Warrens

The Warrens are a location on the planet Cybertron.

The Transformers cartoon
After travelling through the Time Window into Cybertron's past before their liberation from the Quintessons' rule, Blaster, Wreck-Gar, Ramhorn, Rewind and Blurr were attacked by a Dark Guardian but saved by the resistance fighter Beta. She quickly took them to the Warrens, which was a great risk. But as the time neared for their attack on Hive City, they needed all the available Cybertronians they could get for the offensive. Once there, she introduced them to the Autobots and explained to them their plight.