Monopod is a fast Mecha, made for a pilot with only the best reflexes. As you can see, Monopod jumps. Doing so means that it can cover uneaven terrain quickly, but targeting can be a pain. Monopod can be found in the midst of a battle, in an escort, or even around the perimeter. Its main weapon is a heavy autocannon, firing 20 rounds a second. It can pierce armor, and oblitorates infantry. When the going gets tough, a railgun is always helpful. Note to self: Do not fire railgun well jumping. Recoil can be deadly.
The idea is interesting, but it would be strange seeing something like this moving around. How would it get back up if it got knocked over? By the way, monopod is correct. There is really no such word as unipod or unipedal. Unless you're thinking of unicycle.