Fortress of Despair

The Fortress of Despair is a Decepticon base on the planet Nebulos.

Marvel The Transformers comics
The Decepticons had captured Autobot Targetmasters and taken them to the Fortress of Despair. The Autobots thought the Decepticons intended to dissect them in order to understand the Targetmaster technology better, so the Autobot Headmasters set out to free them. Infiltrating the Fortress of Despair was suspiciously surprisingly easy, as was finding the Autobot prisoners, who were strung up to the ceiling.

Before Sureshot could warn the Headmasters it wasn't the Targetmaster process the Decepticons couldn't perfect, the Decepticons blasted a hole into their own base to capture an Autobot Headmaster. As Scorponok took off with Highbrow, the Decepticon troops tried to kill the remaining Autobots, but were defeated when the Autobot Headmasters freed their Targetmaster comrades.