Only appears in certain Survival maps. Little statistic information is known. Only obtainable through Saucer abductions and Necro resurrections. An estimate on unit weight is that it is about as heavy as the Goliath. When picked up upon abduction its carry-icon is a normal Goliath picture. It appears in waves alongside Goliaths, Gorgons, and Devastators, making it tough to fight.
Carbon has stated that the Gemini-Goliath doesn't have an actual name, but that the code refers to it as MonsterTankSurvival. Carbon has also said that it might someday be available to players normally.