Whitaker Berman was a mortal who called himself the Dream Sorcerer. He wanted a relationship, but was often turned down by women due to his paralysis and his aggressive come-ons. When a woman rejected his love, he would enter their dreams through machines and chemicals and kill them, which consequently killed them in real life. Prue Halliwell was one of his victims. He tormented her in her sleep, but she defeated him by telekinetically throwing him off a building in the dream.