When a Queen uses its Spawn Broodling ability, the target creature unwillingly fertilizes and serves as the breeding ground for a near instantaneous metabolization and birth of a pair of Broodlings. These Broodlings have a limited lifespan and are weak attackers, however, their mere presence should be a reason to rejoice since in their place an enemy host (hopefully a powerful one) had to die to give birth to them.
Broodlings are born instantly acquiring nearby units for attack and can cause slight damage before they are typically wiped out. In the event that there are no nearby enemies, they await for a command from their Cerebrate, and can be used to scout. Their relatively quick ground speed makes them better suited for this purpose than for an attack. The Broodlings last for approximately 180 seconds before exploding on their own, so it's better to use them to attack or scout than to let them go to waste.
The Mantaling's StarCraft 2 model
The Broodling (now named Mantaling
) is still a part of the Zerg armada in StarCraft 2. However, they are now produced by the Brood Lord's
regular attack, as well as by the destruction of non-defensive buildings.