They used to be human but mysteriously mutated from an unknown cause. The gas mask and hazmat suit that was supposed to protect the wearer has fused and become it's new skin.
They have a slender hidden blade at the end of each elbow that can extend and retract. The blades are located just inside the outer forearms and slide down past the elbows.
The jelly tendrils are coated in currently unknown toxins.

Originally done in February 3, 2013