The "Trash addicts'or "The Trash Addiction" or "Hoarders"
The Trash Junkies lack any facial features except their mouth which gives off a hysterical cackle (mouth is usually not present on some) and there are multiple lacerations occupying where the eyes and nose should be (on occasion some will have at least one eye, one with two eyes are rare).
Their skin has glass bottles, unused metal, etc. embedded into it and rusty pipes or electrical conduits lodged into their backs. Both males and females are about an average human height.
When attacking the Trash Junkies will proceed to pull either the pipes or the conduits from its back and fight off whoever is trespassing their area.It is currently unknown how regulars become trash junkies, a theory is that if one is exposed to trash too long they will become one of them.
*Note: it is advised that recruits/civilians/unarmed guests shouldn't have access to their containment chamber also it is advised to view them via observation room.
One of the experiments :) Also I.F stands for Iron Fist