The Sexton is a spirit from the Ghostbusters RPG's Tobin's Spirit Guide (RPG).
This is a spirit that believes (to paraphrase The Bard) that all the world's a grave, and the ultimate purpose of any person is to fill a hole-with his or her own body.
If a person digs a hole in the ground for any reason, such action attracts the notice of The Sexton if the spirit is in the vicinity. The spirit wants the hole filled in, but the entity is not without patience; it can wait a day or two until appearing in physical form before the person who did the digging.
The Sexton manifests itself as a frail man dressed in a black suit, with a shock of snow-white hair atop its head. It beckons to the digger, entrances the person, and compels him or her to follow The Sexton to the grave site, whereupon the spirit materializes a shovel, knocks the offender into the hole, and fills the excavation with dirt.