The head technician of the K-1 Facility. He was the one who stopped the connection for a time until we convinced him we meant no harm. He is now working on a device so we can clean the 21 brains connected to Henry of the virus. Walter Greenburg finished his device and was killed by Henry with a neurotoxin gas. He was last heard from in a post on the forums saying he was going to try to destroy Henry's brains.