1. Luis Garavito – Colombia – 1900s – 138 Proven Victims
Luis Alfredo Garavito Cubillos, a.k.a “La Bestia” or “Tribilín” is a Colombian rapist and serial killer. In 1999, he admitted to the rape and murder of 147 young boys. The number of his victims, based on the locations of skeletons listed on maps that Garavito drew in prison, could eventually exceed 300. He has been described by local media as “the world’s worst serial killer” because of the high number of victims. Child-murderer, torture-killer, and rapist known as “La Bestia” (“The Beast”). Confessed to killing 140 children over a 5-year period in Colombia. He is suspected of murdering over 400 victims, mostly street children. Garavito served one of his sentences, but there are another 20 prosecutions against him preventing his release. Additionally, the Ley de Infancia y Adolescencia eliminates the possibility of his release.