The Zodiac is a Government fail safe in case the Justice League turns against mankind.
After seeing the power of the Justice League. The U.S. Government thought it best to create its own team of Superheroes to combat them in case they ever turned evil. After a group of Teen Titan dopplegangers attacked Jump City the Zodiac was sent in to defeat the Teen Titans. However after many battles the Team was captured by the dopplegangers until rescued by the Teen Titans. Some Members have since left.