ghoul

noun4

1. •
   A demon said to feed on corpses.

   • The other chamber had shown a pack of ghouls and witches over-running the world of our forefathers, but this one brought the horror right into our own daily life!. — 1927
2. •
   A person with an undue interest in death and corpses, or more generally in things that are revolting and repulsive.

   • Cars were parked on both sides of the highway, the usual ghouls, of both sexes. — 1939
3. •
   (informal, disapproving) A person with a callous or uncaring attitude to human life and suffering, particularly when prioritizing economic concerns.
4. •
   A graverobber.