Developed by the Asimov Design Bureau, which was responsible for the development of ZAFT's ground combat units, the BuCUE featured a unique quadrapedal, beast-like form, inspired by tanks and helicopters. The BuCUE's legs were fitted with caterpillar treads, allowing it to transform between two movement modes: the quadrapedal mode for traversing terrains with many obstacles, and the cruising mode (also known as tank mode) that can rapidly traverse flat terrains and was especially effective in areas unsuitable for walking, such as deserts and snowy plains. In addition, the thrusters on its wings allowed it to turn rapidly. As a result of its superior mobility, the BuCUE's combat ability greatly surpassed its opponent - the OMNI Enforcer's Linear Gun Tank, with a single BuCUE capable of rivaling a tank platoon.

The other weapon that can be mounted on the turret on the suit's back, since the turret is a rotary type, the missile pod can be fired in all directions. A sensor is installed at the tip of the warheads to automatically recognize and track enemy targets.