The article goes on to discuss the characteristics of a sociopath as follows: Psychologists Hervey Cleckley and Robert Hare both developed sociopathy checklists. The following characteristics are culled from their work. Sociopaths have Jekyll and Hyde personalities and can be superficially charming. Their outward appearance is often very conventional or they disguise themselves as helpless victims. Alternately, sociopaths may come across as grandiose and narcissistic. Sociopaths come in all shapes, sizes, sexes, ethnicities and walks of life.