Malig Laestygon was a commander of the Death Guard during the Great Crusade and Horus Heresy. For unknown reasons, Malig and his forces aboard the cruiser Reaper's Shroud were discarded by their Primarch Mortarion after the Drop Site Massacre, and Malig desperately sought a way to regain their Primarch's favor. The oportunity arose when they were able to trail a Salamanders cruiser carrying the body of their primarch Vulkan back to Nocturne. Malig began a frantic search to recover the body, and after realizing it had been moved to the surface of Nocturne invaded the planet itself. Malig's forces were defeated, but his ultimate fate remains unknown.