Shuck

I'm not sure if he is safe but he likes to stand in the corner and stare and appears to be dripping glue-like ectoplasm from his mouth and sides.

He appears in times of hardship as an omen, and just hovers ominously for a while before disappearing suddenly when the viewer blinks. It is said that if you hear him panting in the corner of the room and do not look at him the hardship will not befall you. Whether this is a good thing or not is yet to be determined.