For a basic enforcer, go around the city and gather at least 500 element dust from lampposts(preferably more), kill a few isolated enforcers until you get 20 oil, go to the wasteland killing the weaker corrupted creatures for corrupted nodules (they can be used as polymer)
When you collect all the resources, go to a city terminal and craft your own enforcer.
Hey guys, so they are the four legged teleporting creatures from the trailers. They feed on ELEMENT DUST. They can walk on walls and teleport as well as use a AOE knockback that uses stamina. They level up just like other mounts do.