An overpowered, heavily armored and remote-programmed ship, the gas drone is used by Psychlos during the primary attacks on a planet.

Requiring no pilot and able to carry tons of lethal gas canisters, it has the capacity to wipe out entire cities within minutes. Once launched, the drone is almost impossible to stop or control.

Despite the efforts of many Earth governments during that fatal attack centuries ago, the gas drone was able to withstand missiles, atomic bombs and even suicide crashes.