When all else is lost and enemy forces close in all around, the Terrans can assemble their entire base into one giant walking titanic robot in a last-ditch effort to hold the line.

Dr. Ron Volt, Terra-tron's curiously named creator, explained at a recent conference:

With the use of magnetic flux generators and through some simple modifications to our existing building schematics, we've found we can utilize structures that already exist in our bases to assemble the frame of a siege-class combat walker - a construct that some of my colleagues insist on calling the Terra-tron. The Terra-tron is best deployed as a last-ditch effort to hold an important location on the grid. Currently the cost of operation is a bit of a problem, as energy conduits and pipes become dislodged or severed and leave dangerously exposed electrical wiring, steel framework, and sewage systems. However, let me assure you that we are working diligently on new waste-containment systems that should eliminate this problem and get our buildings back up to code in the near future.

But over the course of a prolonged defense, even the most hardened armor will crack; missiles and ammo will be depleted; and the toughest troops will be worn down. To create a truly comprehensive defense for high-priority, mineral-rich regions such as the volcanic uplands of Redstone, the terrans needed to devise an entirely new concept in battlefield strategy. Terran military engineers, led by Goraion Systems' head of development Dr. Ron Volt, have been working day and night to design a new kind of base for the terran armies: the titanic Terra-tron.