Vampires (as promised)

A "vampire" is anything which feeds on the energy or sustenance of another thing. Technically, a vampire can drain any type of energy but most people notice that they tend to drain positive energy, leaving the victim drained and in a low mental or emotional state. Interestingly, many "vampires" are not aware that of what they are what they are doing. Many are simply depressive or distraught and angry beings which inadvertently focus these "energies" and inflict them on others, thus draining them.