On the mineral rich planet of Eos, the Helios corporation has set forth from earth to find new resources to sustain the empty earth until a new, viable planet can be found to populate.
The Helios corporation use mechanical robots to carry out most tasks set outside of the structures which they have erected to live in during their operations on Eos. The planet, however, is a hostile place with savage creatures that won't be so forgiving for intruders.
The MTD (Mineral Transport Drone) is a small, automated robot that serves as the backbone of the distribution of minerals and resources for the Helios corporation.
They are small hovering drones that are usually responsible for transporting the mined minerals from dig sites and taking them back to a refinery to be processed. They also serve as small guards as each MTD carries a pair of lasers built into their forearm structures. They're not very powerful but carry a nasty sting that serves as more of a deterrent mechanism rather than to seriously injure anything.