The Psi-stalker is a mutant whose psychic sensitive powers enable him to sense other psychics, psychic energy, and magic. The character can be human, or a D-Bee, or a mutoid. Unlike normal humans, the psi-stalker is a natural predator and energy vampire! The predator senses the use of psychic energy and can follow the distinctive energy trail like a bloodhound following a specific scent. Even though all creatures have a certain level of potential psychic energy, the psi-stalker can tell the subtle differences between normal energies and psychic and magic energies. Some innate instinct draws the stalker to those creatures who are psionic or magic. This same instinct makes the mutant want to kill his prey and drink its psychic energy (which, for a brief instant, doubles when the victim dies)