Leviathan

The leviathan is a massive airborne zerg breed.

Overview
Leviathans are classified as class-10 zerg flyers and and are the largest in terran records &mdash;even larger than a mothership. They were used by the swarm as far back as the Great War, and at least one was present at Char in the Second Great War. Leviathans possess interior evolution chambers, can store many zerg warriors within them, are capable of deep-space travel and can land on planets. They can operate in temperature conditions of absolute zero.

During the, zerg broods in leviathans were on their way to the planet when Kerrigan was de-infested. These broods were then scattered or destroyed. Upon her return to the Swarm, Kerrigan's new base of operations was a leviathan. It would fly to different planets and land on them at her direction.

Game Unit
The leviathan is a special zerg unit in StarCraft II: Wings of Liberty. It creates airborne eggs and cocoons to spawn s and brood lords, respectively. It attacks with tentacles and bile swarm projectiles, and launches scourges and bioplasmid globes dealing 500 damage. It may also put enemy units and buildings in biostasis, removing them from the fight. It may be confronted by the player in the mission "Shatter the Sky" or later in "All In", depending on decisions made beforehand. When it dies, it loses its coloration before it explodes. The underside of it is also lined with four spine crawlers.

Abilities
Despite not having a detector passive icon, the leviathan is able to detect cloaked or burrowed units.