Pedro Lopez was born in Columbia on October 8th 1948, his mother was a prostitute with 13 children. His mother claims that she was loving and caring, however Lopez says that she was cruel would beat him as punishment, and that he witnessed his mother preforming sexual acts with strangers who would also sometimes beat her. He claims that his mother kicked him out when he was age 8 for fondling his sister's breasts, he made his way to Columbia's capital of Bogota, where a man offered him a hot meal and a bed. Pedro accepted, but instead of coming through with his promised the man took Pedro to an abandoned building where he was rapped and left. Pedro, wanting protection joined a gamine gang, ("Gamine"; a term referring to the abandoned street children of Columbia) and started smoking a local drug that was a dirty impure form of cocaine. His gang of gamines would often fight other gangs with knives and belts for sleeping territory and food, Pedro claims that these experiences hardened and scared his as a child. When Lopez was 10 he was approached by an elderly american couple who said that the sight of him begging out on the streets broke their heats, they took him in and enrolled him in a school for orphans. For a few years Pedro led a stable life, but his luck would not last, when he was 12 he claims that a teacher and the school he was in sexually molested him, so he ran away back to the only other life he knew. Pedro spent the next 8 years living on the streets of Bogota, and when he was 18 he was arrested and sent to prison for stealing a car. Only two days into his prison sentence, Pedro was brutally gang rapped by three fellow inmates. In revenge he fashioned a crude shank, and killed each one of his rapists one by one, the warden called it self defense and didn't add any additional time to Pedro's sentence. These killings turned a whole new page in Pedro's life, and shortly after he was released from prison he moved to Peru where he killed his first 100 young female victims.
Pedro Lopez can be described as an "Organised Cereal Killer", he was narcissistic, thrill-oriented, power seeking, and he killed mostly from a lust-like need for murder. He also felt that he was saving the girls from a lifetime of poverty, and would often talk about the girls like he cared about them and thought that he had saved them. Pedro was very focused and well organised, he remembered many of the grizzly details from most of his murders such as dates, times, locations, and what he did with the bodies. Despite everything, Pedro was not born a monster; years of abuse and neglect led Pedro to crave power, especially over women, who he never really figured out how to interact with. When he was younger Pedro would turn to pornographic magazines to satisfy his sexual cravings, because he thought that relationships with women were impractical and unnecessary. His fear and awkwardness around women most likely stemmed from the abuse he received as a child from his mother and from the multiple sexual assaults that he received throughout his life. A few of the known social disorders that Pedro had were Anti-Social Disorder, Avoidant Personality Disorder, and Pedophilia. He also claimed that he had multiple personality disorder but no one knows for sure how many Disorders Lopez has.