Guardian (StarCraft II)

In Heart of the Swarm, primal guardians appear as a strain of primal zerg duplicated from the Swarm. They are identical to the original guardian, but have a weak anti-air attack in addition to their normal air-to-ground attack. The air attack has significantly lower range and power than the ground attack.

A non-primal model of the original guardian was in the map editor for Heart of the Swarm, but is unused in the campaign. Its stats are virtually identical to the original guardian. Unlike the primal strain, the normal guardian can still only attack ground units.

In Legacy of the Void, guardians appear among the corrupted zerg on Aiur and subsequently are part of Amon Brood throughout the campaign.