NOTE | A cloak not only renders a demon semi-transparent, but allows them to pass through most materials, as well.
Following is the YouTube-compressed version of this video:
These have a Space Needle-shaped head (just the round top, not the tower it sits on), with two glowing eyes recessed into the ring around the middle. They are all brown, and their brown cloak falls straight the ground; their arms and legs, if they have any, are concealed under the robe. I have never seen them walk or move; they always appear instantly, and fade out shortly thereafter. The memory of your encounters fades into faint snapshots; most of the time, you can't even remember what you were thinking at the time you saw them. What lends me to believe that this is part-and-parcel to a meeting with this type of demon is simply that I do not have a problem remembering any other events in my life in this way. In fact, an encounter with a demon like this will be remembered exactly like a dream that you forgotten, and then, when somehow reminded of it, you can barely recall any details or draw any images in your mind.
My earliest memory of them was at 4326 East Stop 11 Road, in Indianapolis, Indiana, at or around the age of 5 (maybe younger?). A group of about 5 or 6 of them stood in our family room, talking to my mom. I saw them as I came from another room; before I entered, I turned around and walked away, saying nothing, and never telling of the incident until now (never even thought about it again, actually).