It give 3 sets in the dlc.
Mantis set
You can farm that by the blue enemys. You see a lot of them in the Dlc.
Eagle Set
The first enemy with that set is Chief Helvig (Bossfight unmissable) and by the crew from the operator. The set is white-orange and on her back is a medistation.
OGRE Set
That are the red roboter. When you come out of youre service station go right and defeat the donut head. Little tip, a view steps after him 2 robots near the stairs. You can farm there :)