Gathered Intelligence on this Subject:

The hulking commander of the prison Hvalkatar, Highwarden Slogg is a brutal tyrant not to be defied.

Exposure to a foreign atmosphere at a young age caused Slogg a catastrophic injury. The Squillek born on the moisture rich planet Ax-Ol 39 was then fitted with a custom suit which provides vital moisture to soothe his burnt and damaged skin via canisters of Thryxium. Although this specialized serum provides a reprieve from certain death, Slogg’s every movement is still bristling with agony. 

Like many of the prisoners he so cruelly oversees, the Highwarden’s fate is chained to Hvalkatar. Not only is his life-giving equipment tied directly to the prison’s very structure, but Hvalkatar’s secondary function is the manufacturing of Thryxium, which provides Slogg with an endless supply of the essential serum.