Molders are Lepers of destruction. They tear apart or eat just about anything.
Molders look like giant spiders. They have eight legs and an upside-down face right where the head should be. Under the face is a hidden mouth that has four pincers and many rows of small, but sharp, teeth.
Despite sharing similar spider-like qualities with The Widowmaker, they are not controlled by or connected to it in any way other than being a Leper.
Molders use their mouths to eat or destroy anything. Some High Ranked Lepers use them to clear out areas of importance. Molders like to eat structures built by Constructors, who are their enemies.