Ultralisk

The ultralisk is a zerg heavy ground unit.

Overview
The ultralisk is a 20 meter long and 5 meter high living battering ram, evolved from the docile brontolith; a creature that the ultralisk now bears little resemblance to. Ultralisks serve as the backbone of the Swarm, possessing an exceptionally thick carapace.

Ultralisks attack using large, bone-like scythes which portrude from their backs. Known as "kaiser blades", these scythes are nearly indestructible. Possessing monomolecular edges, these scythes are able to tear through most substances with ease.

Prolonged exposure to vespene gas later resulted in an enhancement of the ultralisks' physical capabilities, among which was the evolution of a more hardened exoskeletal shell and the ability to carry out anabolic synthesis, alterations being made to the glands that produce endorphins and adrenal fluids. These "evolutions" manifested widely during the Brood War.

StarCraft
The ultralisk's attack is not impressive for its cost. Its main advantage is durability and staying power. The ultralisk may lead an attack and draw the first volleys of defensive fire allowing more of the lesser zerg units to survive and close to attack. The ultralisk's relatively slow speed requires some planning to get it to the front rank before the attack. Its large footprint may hinder it and its allies at choke points in addition to making it difficult to reposition once caught in a melee.

Ultralisks are one of the few zerg ground units that cannot burrow.

StarCraft: Ghost
Ultralisks appear in StarCraft: Ghost.

StarCraft II
The ultralisk features in current builds of StarCraft II.

The ultralisk is capable of stepping over smaller units such as zerglings and has a cleaving ability to attack multiple enemy units. However, it does not deal trample damage to units it travels over. It has evolved the ability to burrow and can use a special "head attack" which deals extra damage to structures.

Development
The omegalisk was a pre-development version of the ultralisk, possessing spiked tentacles in addition to kaiser blades. The tentacles could attack multiple opponents.

The ultralisk was reverted because the skewering was too "random".

The omegalisk appears in concept art for StarCraft II.

Special Ultralisk Strains

 * Blade Guardian
 * Omegalisk
 * Torrasque
 * Wise Old Torrasque
 * Zergrinch Juggernaut