Shoggoth

Shoggoths are a species of Archenemy with an amorphous form. The Shoggoths that appear in the series are a human-altered variant mainly referred to as gels.

Description
Little is known about natural Shoggoths. The one captured by the Bright Cross was described as a "slime creature". It attacked other Archenemies mindlessly and was eventually killed using chemical treatment. Maxwell speculates that it always had its current form and wasn't originally a human like some other Archenemies. More Shoggoths were discovered by the United States military in an Antarctic crater, these ones being altered to create the gels.

Gels, officially codenamed Slave X, were created by chemical and surgical alteration of Shoggoths. Among these alterations was the severing of the thought bridge, which causes them to attack any source of motion and have no chances of rebelling. Gels resemble puddles of translucent red slime, big enough that a human would need a running start to jump over them. They can can consume adult humans within less than twenty seconds. However, although the gel's prey appears to be dissolved, they can be saved by applying a force of over 9.5 Gs within 72 hours of consumption to separate them from the gel. Gels lack senses of vision or hearing, instead sensing their surroundings by dissolving particles in the air. They have the ability to increase their volume by swelling up, though this does not change their actual weight. In this state they can create powerful gusts of wind by waving their bodies.

Trivia

 * The shoggoth is a monster in the Cthulhu Mythos by H.P. Lovecraft. It is described as a massive amorphous creature with countless eyes.