Aeronomatron or Aero for short was an A.I. that overtook Old Zeropolis, the government allowed all the systems to be interconnected and controlled by Aero. His physical body was in Area 21 in Old Zeropolis. Aero was considered the bloodiest incident that ever happened to the Outskirts, with maybe even a million people dying, he manufactured and used all machines in Zeropolis to seize control. People tried to make treaties, eventually they seal him off and stopped his production of robots, the city was abandoned and a new Zeropolis was made. In the end the Unseen used a Harmony Bomb to destroy Roxie another A.I. with Constance's Shaping Power and Aero. Data used Aero's crystal to gain a wide amount of information.