The term "Cerebellians" is conjectural. This article's real name is unknown and a non-canonical nickname or title is used instead. Please see the reasons for this title in the "Behind the scenes" section below, and/or the relevant discussion on the talk page.
Cerebellians were a race of brain beings hailing from planet Cerebella located in the Bogon Galaxy. Like the Drophyds, the brains themselves were harmless, to compenstate for this weakness, they controlled Mechanical Bodies. The B2 Brawler and it's cousin named Brainius are the only known Cerebellians. While not real villains, they do take pleasure in trying to kill the Lombax.