The DDS' most dangerous foe over the last few years has been The Rectoids. A little known race who live far beyond the Central Powers' region of space. For a number of years they have been involved in trying to destabilise the peace of the Central Powers, their hand has been detected in several attempts to manouver the DDS, Dinos and HCS into a war. They have also made a number of attacks on the DDS, including the destruction of the small planet New Britannia which cost nearly 2 million human colonists lives.
The DDS thought they had defeated the Rectoids after turning the Utrek on them and the Dinos turning the ABBOs on them but the Rectoids came back and Windscorpion was sent to finally defeat them. He and Megara did this using bio-genic missiles that laid waste to the home world Recta at the cost of billions of Rectoid lives. However the Rectoids have recently begun attacks against the DDS again.
Not much is known about the Rectoids, they have a militaristic society but with a distributed leadership. Thus there is no one Rectoid who can be considered their leader. Instead they have a heirarchy of classes that range from Workers to Chief Facilitators. These Chief Facilitators make the decisions. The Rectoids are very advanced technologically, being experts in phasic cloaks. Their ships can also exceed 1000c easily, which is just as well as the distance from the DDS to the Rectoids is vast. An Isometric class frigate took 8 months to get from the DDS to Recta.
Why the Rectoids want to attack the DDS is unknown but interrogation of prisoners have uncovered a hatred for non-Rectoid intelligent life and a desire to see it destroyed. The Rectoids have been shown to not care about the deaths of millions. The only way the war between the DDS and Rectoids might be ended could be the utter destruction of one of the sides.