The Mercykiller class of vessels comprise a portion of the Tinris World Navy's tactical strike fleet elements. While not as nimble as a lighter craft, Mercykillers operate in a unique niche due to their ability to run more quietly than most. Each such vessel is painted with a unique, and highly classified, hullpaint intended to blend seamlessly into the swirling pattern of the Phlogiston. Before entering Wildspace, however, they are able to effect an immediate change in coloration to match the background of the crystal sphere they are ready to enter. The exact methodology of this transition is held in utmost confidence, though it is rumored to be of extraordinary expense given the failure to implement on a larger scale.