Infestor

The infestor is a zerg unit which appears in StarCraft II.

Overview
Evolved from the borbu matriarch, infestors are one of the more insidious new additions to the Swarm, supporting hydralisks and roaches on the battlefield. Unlike most zerg strains, infestors have the ability to move while burrowed. They can spew a volatile plague over their targets with dire effects, and they have been known to ingest infested marines, carry them to a combat zone, and regurgitate them to fight for the Swarm. Perhaps the infestor’s most dangerous feature is the neural parasite, a symbiotic creature living within infestors that, when spat, attaches to an enemy and controls its mind for a short period of time. Seeing the immense potential of this parasite, the Queen of Blades carried out incubation of new strains capable of living longer outside of their host.

Game Unit
Infestors are strong against s, s, and immortals, but are weak against s, s, and.

The infestor is a ground support unit which is capable of moving while burrowed. The infestor does not have a standard attack. The infestor's abilities are largely geared towards enemy harassment, since it can spawn infested terrans even while burrowed; if snuck behind enemy lines, one can cause havoc among workers. It can also take control of a single enemy unit with its Neural Parasite ability.

When one moves, it leaves behind a trail of slime. When burrowed, visible cracks in the earth can be seen by its controlling player.

Campaign and Map Editor
Blizzard devised a new infestor model over the course of development. StarCraft II beta files label(ed) this old incarnation as a swarm host.