Ultralisk (StarCraft II)

The ultralisk remains the heavy assault beast for Zerg forces. The ultralisk may now burrow, although it takes longer than for smaller zerg units.

Tactics
Ultralisks are fast and deal high damage to armored units. They also deal splash damage which makes them effective against groups of low HP units, such as zerglings, marines and zealots. They are vulnerable to immortals, and deployed siege tanks, especially if a screen is provided.

Campaign
Captive ultralisks are featured in a number of doodads. "Piercing the Shroud" has a building of a captive ultralisk; when destroyed it releases broodlings.

Development
At release, the ultralisk had a "Ram" ability that performed a head butt on a single building. It was removed in version 1.1 because it generally was less useful than the normal attack.