The Corsair is a small, agile interceptor craft armed with a single powerful Plasma Cannon. Unusually for a fighter, this features a low rate of fire. However, an impact from this anti-tank weapon is almost always fatal for anything less than the heaviest of aircraft. UCM pilots have described its effects against light aircraft armor as 'total overkill'. The Corsair's primary tactic is to hold fire until it has reached almost point blank range in order to place a single, devastating shot. This makes it a sinister opponent in a dogfight, since a pilot seldom has the warning of inaccurate fire, and would have absolutely no chance of bailing out should a single blast hit home.

The main reason that the Corsair deploys such a powerful weapon is that it is routinely employed for ground attack missions against enemy armor. Corsairs often run ahead of Scourge dropship flotillas, risking destruction in the quest to annihilate enemy air defenses, allowing the Scourge to land in close proximity to their quarry. Indeed, Corsairs seem to readily abandon their own lives in favor of the masses, suggesting some kind of hive-like conciousness in Scourge armies. Presently, this is pure speculation.