ACE is a massive organisation that is made up of highly trained fighters and hackers that came across the existence of the Alpha Centauri universe and how they had impacted the world as a whole. They quickly discovered that the species of the Solar System had been responsible for some of the biggest terrorist assaults on earth. They decided to build an army and send them off into space to conduct their own terrorist attacks on the solar system. They have been responsible for many deaths and destruction through the years.