The Quaddie is a four legged robot that has a central pod/cylinder body. It is in no way humanoid. These machines have low level cortices, very limited intelligence, and can only follow simple instructions.
The most common use of quaddie robots is in waste disposal, sanitation, and logistics. They have a good cargo capacity, high stability, and are not prone to distraction. Military quaddies are typically self propelled gun platforms, or the legged equivalent of perimeter pods. Unlike other military robots, quaddies tend to have good to excellent armor.
Quaddies have one combat strategy: advance and fire weapons. If things are going poorly, they will withdraw and fire weapons. Simple, but often very effective.