Certain creatures in the Mazes are the result of past scientific experiments that have, for one reason or another, either gone wrong or been released into the Uncivilized Area, where they proceeded to "go native" and become one of the many species of creatures inhabiting the UA.
Blobs are considered to be living creatures, but only in the same sense that viruses, amoebae and other simple organisms are living creatures. In the strictest sense, blobs are ''[https://en.wikipedia.org/wiki/Protist protists]''; a category of living creatures that is considered to be neither an animal, plant, or fungus. Specifically, they appear to most closely resemble the category of ''slime molds'', but with unique properties.
A singular blob is considered to be a single-celled organism, but exhibits unique and strange properties - namely, an extreme resilience to all but the most violent forms of damage, as well as an outer shell that is completely impervious to fire. They are composed of three parts: a nucleus acting as a central nervous system (the "core" or "brain"), a filling of brightly-colored, usually highly corrosive substance, and an outer layer called the "skin" that can stretch and deform. The underbelly of that skin can open and close microscopic pores at will, leaking a small amount of its own filling for the blob to slide on, conferring the blob the ability to move in any direction (if very slowly), much like a snail.