Ground multifunctional transportable unit that helps mainly in defence of objects and speeds up its construction. It enters battle only while on the object and about 50% of Hydralisks self-repair after battle.
When attempting to gravitationally damage the structure of an object with a diameter of up to 100 km, they cover the sources of damage with their bodies, exposing themselves to the gravitational beam or collision, thus increasing the structure of the object by an amount equal to half of their own armour.