Specter

Specters are undead, incorporeal creatures that resemble ghosts, with a hatred for all living things. Specters drain the life energy from living creatures, turning them into new specters upon death. They are powerless in natural sunlight to the point of fleeing from it. A specter appears as a humanoid, with a mostly transparent and faintly luminous form; it look much as it did in life, and can be recognized by someone who knows what the person looked like.

Specters are very similar to wraiths.