Jeffrey Lionel Dahmer, also known as the Milwaukee Cannibal or the Milwaukee Monster, was an American serial killer who killed and dismemberment 17 men and boys from 1978 to 1991.

Murderabilia, also known as murderabilia, is a term identifying collectibles related to murders, homicides, perpetrators, or other violent crimes.

Edward Theodore Gein, also known as the Butcher of Plainfield or the Plainfield Ghoul, was an American convicted killer and body snatcher. Gein's crimes, committed around his hometown of Plainfield, Wisconsin, gathered widespread notoriety in 1957 after authorities discovered he had exhumed corpses from local graveyards and fashioned trophies and keepsakes from their bones and skin. Gein also confessed to killing two women: tavern owner Mary Hogan in 1954 and hardware store owner Bernice Worden in 1957.

Robert Philip Hanssen (born April 18, 1944) is a former Federal Bureau of Investigation (FBI) agent who spied for Soviet and Russian intelligence services against the United States from 1979 to 2001. His espionage was described by the Department of Justice as "possibly the worst intelligence disaster in U.S. history." He is currently serving 15 consecutive life sentences at ADX Florence, a federal supermax prison near Florence, Colorado.

Between 1984 and 1985, Ramirez terrorized the Los Angeles area, breaking into homes at night and committing brutal murders and assaults.

Anna Marie Hahn was a German-born American serial killer. She poisoned several people and killed 5 of them.

Paul John Knowles, also known as The Casanova Killer, was an American serial killer tied to the deaths of 20 people in 1974, though he claimed to have taken 35 lives.

Vlad III, most commonly known as Vlad the Impaler was the Voivode of Wallachia three times between 1448 and his death. He is often considered one of the most important rulers in Wallachian history and a national hero of Romania.

Joseph Douglas "Joe" Ball was an American serial killer, sometimes referred to as the "Alligator Man", the "Butcher of Elmendorf" and the "Bluebeard of South Texas". He is known to have killed two and is said to have killed as many as 20 women in the 1930s. His existence was long believed to be apocryphal, but he is a familiar figure in Texas folklore.

Adolfo de Jesús Constanzo was a Cuban-American serial killer, drug dealer, and cult leader who led an infamous gang that was dubbed the Narcosatanists. His cult members nicknamed him The Godfather (El Padrino). Constanzo led the cult with Sara Aldrete, whom followers nicknamed "The Godmother" (La Madrina). The cult was involved in multiple ritualistic killings in Matamoros, Tamaulipas, Mexico, including the murder of Mark Kilroy, an American student killed in Matamoros in 1989.