In the Solar Calendar, as Joshua calls the timeline and universe of MFZ, humanity has surpassed the boundaries of Earth and is traveling deep into space using Transit Gates to cover the distance. The majority of the manual labor is conducted by Mobile Frames, large machines somewhere between exoskeleton and full-blown mecha. They are three to four times as tall as humans and develop six times their lift and carrying capabilities, while retaining human mobility and most of the agility. These mobile frames were sooner, rather than later, integrated into military purposes, and are used as the one-stop solution to anything that requires force on the ground. While the military and paramilitary organizations of the Solar Calendar use combat-specific builds, many rebels or less fortunate mercenaries use repurposed labor frames just the same. This book will use the term “frame” when referring to Mobile Frames, combat-oriented or otherwise.