Moonbase Two

Alongside Moonbase One, Moonbase Two is an Autobot base on one of Cybertron's two moons. It appears to be smaller and less extensive than Moonbase One.

Spike Witwicky and Bumblebee were stationed on Moonbase Two until Unicron attacked it after gobbling up Moonbase One. Spike and Bumblebee set the entire moon to self-destruct in Unicron's mouth in an attempt to destroy the planet eater, but he didn't even bat an eyebrow.