Here are 20 most evil and notorious serial killers the world has ever seen:The Zodiac Killer. ... Donald Henry Gaskins: The Hitchhikers' Killer. ... Tsutomu Miyazaki: The Human Dracula. ... Ted Bundy: The Crazy Necrophile. ... Jack the Ripper aka Whitechapel Murder. ... Luis Garavito: The Beast. ... Ahmad Suradji: The Sorcerer.More items...
Mass murderers differ from spree killers, who kill at two or more locations with almost no time break between murders and are not defined by the number of victims, and serial killers, who may kill people over long periods of time. Mass murder is the hypernym of genocide, which requires additional criteria.