Hydralisk (StarCraft II)

Tactics
Hydralisks counter mutalisks and banshees. A combination of roaches and hydralisks can defeat a combo of zerglings and mutalisks. Hydralisks can excel against void rays, given the starship's weakness to mass units. Burrow for a short time to cause the void ray's attack to lose its charge, then resume attacking.

Hydralisks have a melee attack in addition to their normal ranged attack, but it does the same damage as the ranged attack. The melee attack is purely cosmetic and has no effect on gameplay.

Development
Hydralisks have constantly moved in tier from 1.5 to 2 and back over the development of StarCraft II. In April 2009 the hydralisk has been moved back to tier 1.5, as part of an effort to prevent zerg vs zerg matches devolving into roach vs roach battles. In May 2009 they were moved back up to tier 2. As of June 2009 they were moved back to tier 1.5.

Through the lurker den, hydralisks could receive muscular augments: