Nobody has mentioned Albert Fish (child murderer, cannibal), surprisingly.
From Wikipedia
Albert Fish was born as Hamilton Fish in Washington, D.C., to Randall Fish (1795-1875) of Kennebec, Maine and his wife, Ellen, of Ireland. Albert Fish later stated that his family had an extensive history of mental illness. He was the youngest of four, accompanying siblings Walter, Annie and Edwin. Randall Fish died in 1875 in Washington D.C. Albert claimed much later that his mother, unable to care for him, put him into an orphanage where he was ruthlessly whipped and beaten. He said that he was the only child who looked forward to the beatings. By 1890, Albert had arrived in New York City as a house painter. In 1898, he was married to Anna, nine years his junior, with whom he had six children: Albert, Anna, Gertrude, Eugene, John and Henry.
Fish, a painter, claimed to have drifted across the United States, murdering at least one person in each of the twenty-three states he had visited as well as various other victims along the way, although this claim is not supported by any of the known documents on his life. Doctors examining him for his later trial claimed that he was a sadomasochist, indulging in self-mutilation, driving needles into his body, mostly around his genitals. He said he tried sticking a needle in his scrotum but it was too painful, and there were needles in his pelvis that were permanently embedded. He would stuff cotton balls soaked with lighter fluid into his rectum and set fire to them. He is said to have consumed not only the flesh of his victims but also their urine, blood, and excrement. He attributed these tendencies to the abuse he suffered in childhood. He also claimed God sent him on "missions" to kill. His murders often involved slow torture. He would tie children up and whip them with a belt cut in half with nails sticking through to tenderize the flesh for cooking. Fish called his weapons "implements of hell."
"If only pain weren't so painful."- Albert Fish
Is this not a very sick twisted individual?