The Monolith Theory was created by Dr Grimm and ties directly into his Ecliptic Prophecy. He deduces a planetary alignment brings about the awakening of a sentient AI network, which in turn sweeps the universe and eradicates all organic life. Monolith is a giant spacecraft made up of merged chunks of technology and robotics that have been gathered from throughout many solar systems.
Carthanc's Apocalypse Edit
A Paragon team was sent to the surface of Carthanc to gather evidence of past life. The remnants of giant, sprawling cities were now nothing but empty husks. The data they managed to transmit back to Scythe was footage of Monolith eradicating one of Carthanc's biggest cities.