The GMK series Mecha also known as a "Grease Monkey", is a type of general-purpose engineering vehicle left over from the Transgenic Wars. The GMK series were used to construct and maintain everything from remote outposts to space platforms as well as harvest resources. These vehicles are still used by Utopian Domes, CostMart and Copernicus City on the Moon. The Alamo Empire has purchased a number of these units from CostMart, which are used to maintain levies, dams and other major works of engineering, and (occasionally) combat. The Guild of Engineers makes great use of these devices.
As a robot, GMK units are simple laborers capable of doing only what they are explicitly instructed to do. However, these devices are equipped with a cockpit large enough to accommodate a human sized pilot. Once inside the GMK is capable of doing whatever the pilot is capable of, and attack based on the pilot's ability.
More details may be found here: http://mythadvocate.blogspot.com/2013/01/atomic-dawn-gmk-series-mecha.html
