Not who. What. It was this machine that was made to keep stalkers out of Pripyat and Chernobyl. If you got to close... [He claps his hands together suddenly.] -Bam! You are a zombie with a scrambled brain.

Disgusting and dangerous; many stalkers have died to those creatures. They hit like a train and cause Shockwave's with their feet.

I found Fang later. The poor little pup was wandering the Junkyard about six months ago. I think I have been here too long for him to have come with me, anyway.