Kukulkan Brood

The Kukulkan Brood was one of many Broods of the Zerg Swarm.

Though it existed only for a short time, its warriors were ferocious and deadly, and capable of easily infesting any creatures they encountered. Consisting of Hydralisks, Mutalisks, Ultralisks, Zerglings, Drones, Overlords, Queens, and later a unique strain referred to as Houndlisks, the Brood was assembled after the death of the Overmind by Kerrigan as one of the assault Broods of her new swarm.

History
The Kukulkan Brood was formed on Char by Kerrigan after the death of the Overmind. The brood remained there protecting the new Hive Cluster until Kerrigan recieved a signal from the Xel'Naga artifact on Bhekar Ro, which temprarily threw the Zerg into chaos. She then ordered the Kukulkan Brood to locate the artifact and capture it.

The Brood used Behemoths, a massive strain of Zerg transport meant for carrying large numbers of Zerg through space, to transport the Brood to Bhekar Ro. The Swarm landed there and began infesting the world, building Hatcheries, Creep Colonies, and other structures to increase their numbers. In doing so, they infested Big Blue, a sky-blue colored dog belonging to one of the colonists, and incorperated his genetics into a new strain of zerg called the Houndlisk. This was the Brood's only distincive color.

After the Protoss arrived, the Kukuklkan Brood began multiplying, producing more and more creatures including Guardians and Scourges, and fighting the Protoss. A huge melee ensued when the Terran Dominion under Edmund Duke also arrived, and a three way brawl ensued.

Eventually, the Xel'Naga artifact culminated into a new life form, and in its spectacular birth, the creature absorbed every creature and building of the Kukulkan Brood, as well as every Protoss soldier, destroying the Brood completely.