The Scorpion is based on the brand new science of gravitic manipulation. The vehicles drive technology is delicate and tempramental, and not suited to being a long distance from its home maintanance depot. Because of this it is still only fielded in small numbers, and only in defensive rolls.
About this creation
This is the command variant of the Scorpion. It is basically a Scorpion with an upgraded communications package, with a little bit of ECCM thrown in.
This is the Scimitar. It is the infantry fighting vehicle variant of the Scorpion. It has a longer hull, an axially mounted assault hatch at both the front and back ends, and mounts a repeating energy beam as it's main weapon to bring ammo storage down and maximize the infantry hauling capacity.