The Cerberus Project was the codename of the Mountain Men project to create subservient soldiers, known as the Reapers. The project was led by Cage Wallace, and was unknown to many in Mount Weather, aside from the Guard. The process involved the use of the highly addictive Red drug in a brutal ordeal to turn the strongest captives acquired from Harvest Project raids on the surface. Once turned, Reapers were employed as outside guard and raiders to defending Mount Weather and bring back more captives in exchange for the Red drug.