Leviathan

The leviathan is a massive airborne zerg breed. 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. It may also put enemy in biostasis, removing them from the fight.

It drops eggs and cocoons to spawn mutalisks and brood lords, respectively. It attacks with tentacles and launches scourges and bioplasmid globes dealing 500 damage.

Game Unit
The leviathan is a special zerg unit in StarCraft II: Wings of Liberty. It may be confronted by the player in the mission Shatter the Sky or later in All In, depending on decisions made beforehand.

It is also the level 2 boss for the Lost Viking arcade game in Hyperion's cantina.