A base established on a moon. In particular, the two bases established by the Autobot
s on the two moons of Cybertron
prior to Transformers: The Movie. Given the highly original names "Moonbase One" and "Moonbase Two" (!!), these were to be the base of operations for recapturing Cybertron from the Decepticon
s. They were meant to be secret, but the Decepticon Laserbeak
was able to infiltrate them. Before any attack could be launched, the moons were devoured by Unicron
Jazz: "Some ginormous planet-looking thing has just showed up in the suburbs of Cybertron"
Bumblebee: "And it's attacking Moonbase 1!"
(TransFormers: the Movie)