Hello Insurgency dwellers! I notice it's been a while since a post, so why not revive this thread [or try to] and talk about an idea I had!
An agent, infested by a manmade anomaly that acts somewhat similar to cancer in some ways, slowly overtaking his cells and replacing them with artificial ones created by the anomaly that never die. The Agent often gets limbs grown from the anomaly, which are created for threat prevention to the host. The host will stop pumping blood to the limbs after the threat is gone, and amputation is common. It has gone through several hosts. The tumor, which resembles a growing maggot, will kill the host after either cutting off the vital organs from the brain or overwhelming the brain with it's created cells. The anomaly resembles a vaguely artifical maggot. The anomaly can also increase the power of it's host with its cells.