Hazmats: Class 1
Hazmats aren't really entities. They are humans in hazmat suits that usually work for the government. The Government has a way of watching over the backrooms, by sending out people in hazmat suits to experiment and record different levels. Even though these people (Hazmats) know they are about to be put in a space of reality that has not been discovered, but they do not know that they are sent in there to die. The government has the Hazmats to experiment, to see what happens to them. They constantly send Hazmats to see how far they get, to see how long they last before they die.