Cybertron Base (RID)

The Autobots' base of operations, this consists of a large computer-lined room buried beneath a parking building. Entry can be gained via either a hidden entrance in the parking building, or via the Global Space Bridge. As a part of the computer, T-AI is a permanent resident, and Optimus Prime and Koji can usually be found here. It's located in Metro City.

2001 Robots in Disguise cartoon
When Optimus Prime was outmatched by Predacons, T-AI called the Autobot Brothers from the base, iniating a Battle Protocol. After the battle in New York City, Optimus Prime brought Koji Onishi to the base.