hi
This creature is a vessel for souls of the dead. Mindless, humanoid globs of goo that kill the living in a blind rage. But this one is different. It´s smarter. it put on a skull to try to regain what little humanity it had. It had consciousness. It tried to find its sister, who was still living at the time, but not recognizing the creature, she stabbed it in the head, trapping its soul in eternal damnation. She found out later what she really did.