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The reaver is a protoss mobile siege-artillery unit.
The reaver evolved from a civilian mobile manufacturing unit that was militarized to become a mobile artillery piece, ensuring that fewer lives would be lost when assaulting enemy bases. Somewhat fittingly, reavers are renowned for leveling entire colonies in moments.
The reaver itself does not mount any weaponry, but instead houses a micro-manufacturing plant similar to the carrier, producing tiny robotic drones known as scarabs. Tube-like protrusions are located on the sides of the reaver's head, giving the appearance of 'eyes'. These are used to help the reaver navigate.
Reavers fell into less use after the end of the Brood War, but remained part of the Daelaam's arsenal in clearing out zerg hive clusters. A number of reavers came back into service during the End War when Phase-smith Karax developed automated scarab production based on the Spear of Adun's star forge.  Reavers were also deployed against the Daelaam by Amon in defense of the psionic matrix, but were able to be reclaimed by Karax. They were deployed by the corrupted Golden Armada against the Daelaam defending the Xel'Naga Keystone, but failed in their objective.
Scarabs are small, highly explosive drones constructed and launched by reavers. They are launched at enemy targets and installations in groups, able to level enemy structures in moments. Unlike interceptors however, scarabs do not return to the reaver. Instead, they explode on impact, generating devastating electromagnetic fields that cause heavy damage to their targets.
- For StarCraft gameplay information see: Reaver (StarCraft).
- For StarCraft II gameplay information see: Reaver (StarCraft II).