A large mass of goo, the Giant Goo Cube is approximately 4-5 times te size of a normal Goo Cube. Despite their incredible size, they are not a major threat. Their lack of brain or ligaments makes it very hard for them to attack humans or any other creatures. However, due to their large weight, they can cause a fair amount of damage to those who are weak. The Giant Goo Cube also possesses a very large health and gains health from fellow Goo Cubes in the vicinity.