The Imperial Cosmichains are a power-draining alien bondage device.
For the majority of the story, they are used to contain the Caged Demonwolf.
The Imperial Cosmichains first appear in Big Cosmic Pimpin', where they are used by Imperial Pimpotron Alpha to restrain Empowered. After she is rejected as a candidate for the Cosmolactic Emperor's harem, Imperial Pimpotron Alpha departs, leaving the chains behind.
In Demonwolf of the DVDs, Empowered uses the Imperial Cosmichains to capture the Caged Demonwolf. The Caged Demonwolf has remained imprisoned within them ever since, though he states in Deflowered and Dispassionate that, due to his non-linear perception of time, he knows that he will be free again at some point in the future.