The Infested Terran was a light, ground Zerg unit that was spawned by an Infestor using its Infested Terran spell. The spell and with it the unit were removed in Patch 4.11.0 in November 2019. They were replaced by Microbial Shroud.

The Infestor throws an Infested Swarm Egg, which has 70 HP and takes three seconds to hatch. When it hatches, an Infested Terran emerges with health proportional to the percentage health of the egg, i.e. an egg that's at 50% health hatches an Infested Terran with only 50% health. The Infested Terran lasts for 21 seconds; it can attack up to 34 times during its duration, resulting in a maximum of 204 damage dealt (without armor or upgrades being taken into account).