.
Common trends:
About 8 feet tall.
Appears in bedrooms most of the time.
Red or yellow eyes sometimes, but never an actual face - yet the person can "feel" him smiling or sneering.
Other people with the person may or may not be able to see him.
Sometimes reported to pinch, burn by touch, or choke people, but MOST of the time just stares. Other shadow people may float to and fro as if unaware of the person, but fedora hat man always makes contact. Eyes or not, you will feel him there, and you will also feel him feeling you.
Usually appears to very young, 10 and under, but not strictly. Usually appears to adults when death is near, so some suspect he is a reaper of some sort. My theory is that he marks children and returns later to collect them as they die, perhaps acquiring life energy of some kind? IDK, I don't do ghost stuff. I don't believe in spirits and ghosts really. I think hat man is very real, based on:
Attire! He was first reported in the 1800's and he, along with a few other hat people, are wearing indeed clothing from the 1800's, consistently. Capes, collars, "Abraham Lincoln-style" is often stated.