

Many theories on their origins have been suggested by the remaining human population. To most of the people on Sera, the historical background on the Locust is generally unknown. The children of the Sires had Lambency in their cells and were mutated from birth, and so the first Locust were born. Fearful of the media and political response towards these mutated people, the scientists of New Hope sealed the Sires away and took their children to Mt. This resulted in the creation of the Sires (predecessors and parents of the Locust Horde).

Unfortunately, the Imulsion began to mutate and an early form of Lambency took hold. The infected members of the population were gathered by the COG (Coalition of Ordered Governments) and moved to New Hope where it was hoped a cure could be found. During the start of the Pendulum Wars, many of the Imulsion miners who had taken part in the Gold Rush began contracting a serious illness after extended Imulsion exposure. The beginning the of the Locust Horde started at the New Hope Research Facility.

While this conflict was happening, the Locust were fighting other Locust that were infected with Imulsion (the Lambent).

This war would be known as the Pendulum Wars that lasted for 79 years. These tunnels were spread out throughout the planet while different groups of humanity (COG and UIR) were at war with each other over Imulsion. They originally live a subterranean lifestyle beneath the surface of Sera by underground tunnels (known as the Hollow). The Locust Horde are the main antagonists of the entire Gears of War video game franchise. ~ Chief of the COG Defense Staff, General Bardry Salaman describing the Locusts. We can't even begin to negotiate with them, or work out their objectives, because we just don't know the first damn thing about them.
