Voiuum

A voiuum is a name for a "person" who lacks empathy, love, light, or any basic good value/positive emotions. It is someone who has to suck out the emotions and goodness in others that they can't illicit themselves only for that good energy to die in the void/vacuum/black hole of said voiuum's core.

That voiuum will die miserably and alone and will blame everyone else for their fate.
The voiuum will suck you dry of any life just like a vampire, and will sleep well and pleasantly next to the carcass.