Killer Apes of the Prog-1 were highly modified humans adapted for a nocturnal carnivorous lifestyle. They were large and heavily muscled. They had large vertical pupils that gave them excellent night vision and sharp talons and shark-like triangular teeth for catching prey. They were covered in dark fur. This made them hard to see at night and kept them warm.
They were created as guardians for the unique hybrid ecosystem on the Prog-1 until they were expelled due a change in policy.