Greddem

Its shape resembles an irregular ball of gelatinous, translucent mass. The outer shell (skin) holds the caustic, sticky substance inside. It feeds on rocks, galvanite and galvaon, burnt with this substance.
It only moves in caves by sticking legs to the tunnel walls and pulling on itself. He communicates with double “squawks” calling for others.

It attacks by sticking to its opponent and “absorbing” it towards itself. Corrosive internal acid quickly digests the human body. Weapon shots usually do not work, because the creature quickly forms into its original form. To kill him, you have to shoot him multiple bursts at once or treat him with an explosive weapon.