Psychopaths are usually regular humans that have snapped under the strain of the zombie outbreak, and these can vary from a children's television star wearing a giant mask, roller skates, and homemade flamethrowers to a military man who's lost his team and his mind. Frequently, they use a special weapon which then becomes available to use and/or make after the psychopath is defeated. Chuck will encounter them as he searches for Zombrex, rescues survivors and attempts to clear his name during cases.