PRIMAL CORRUPTION, the TRUE final boss. He is fought if you manage to find the true backstory of Jerry (the flying evil tv robot thing), the experiments, Mushroom, and the 89 incident. He is made of a giant concentration of k2 corruption in gas form, with 2 giant, glowing eyes. He is not a liquid, but a gas made from corruption and the k2 council's sheer will to spread. If you touch it, you will not die of the corruption itself, but the mind of the council will infect your mind with sheer will to die, eventually killing you if you're still touching it. It usually does not have a mouth, however, it can form one to kill it's opponents. Unlike Pure Corruption, it CAN speak, via sheer will. When it speaks, it does not need a proper mouth, unlike the other k2 corruption. Instead, it just uses it's eyes like speakers, and that way it can talk.