Alright, now that people are in, I guess it's time I posted descriptions of the mechanized units!
Type 1: "Cores"
The most basic form of the government's mechanized defense program, and a required component of any other, larger units. Powered armor, only slightly larger than the wearer, it serves to augment the user's physical attributes, as well as allow synchronization with the larger units. Developed as test units, they cannot mount large weapons, limited to hand-carried equipment. Commonly deployed against small incursions from the other side of the tears.
Type 2: "Hunters"
Roughly 10-30 Meters tall, and piloted by a single operator, the "Hunter" units are the most commonly seen of the Titan Project. Deployed to stop medium-grade incursions, each unit is customized to the desire of the operator, from the control mechanism to the integral weapon systems. Any individual unit can mount roughly 8 weapons, and usually does so in pairs. Hand-carried armaments are not uncommon, either. Some Type 2's have been modified into two-seat trainer units as well, designed to assist rookie pilots in learning the basics.
Type 3: "Titans"
The first unit to require a second operator, the 45-60 Meter tall "Titan" class units are towering behemoths of machines, and, while still bipedal, exhibit far more deviations from humanoid. Capable of mounting up to 12 weapon hardpoints, and easily able to lift weapons the size of small buildings, these massive war mechs are deployed against monstrous foes from the tear. Some of the more complex machines require even a third operator, usually to handle extra limbs, or, depending on the unit, possibly to maintain unit stability, regulating power flow and other such vital tasks.
Type 4: "Omegas"
Colossal, city-sized fortresses, the "Omega" class units are merely a rumor, though the crew requirement to handle such a weapon would no doubt be astronomical.
Each Combat pilot character is automatically given a Type 1 and Type 2 unit. Type 2's can be either airlifted or deployed via underground tunnels to their operator's suit signal.
Type 3's are not able to be deployed quickly, instead requiring a significant amount of time, as well as a second character to co-pilot.
Type 4's are merely rumors at the time, though that may change...