Goo Number 8739-B
Goo #8739B (also known simply as Goo) is a planetoid composed almost entirely of a sticky gum-like substance. It's used as a Garbage Disposal of sorts, and has apparent connections to the Junkions.
Fiction
Generation 1 cartoon
The Autobots Rodimus Prime, Ultra Magnus, Springer, the Aerialbots and Arcee, as well as Spike Witwicky and a Quintesson crashed on Goo, after fleeing the destruction of Quintessa.
On Goo, Springer was caught and dismantled by an alien garbage truck, and the Autobots were attacked by a large force of Decepticons.
Afterward, in a fit of rage, Galvatron destroyed the entire planetoid. 'Cause he can do that apparently.
Strangely though, the planet was sighted again in the episode Chaos where it was stated that an energy felt kept the "goo" warm and sticky which needed to be switched off if the Autobots wanted to walk on its surface. Whether this is the same Goo or another planetoid like it is unknown.

