Marvin Gayle Gray (August 7, 1954 – July 23, 2013) was an American serial killer. Being a powerlifter, Gray, while imprisoned, achieved incredible results in powerlifting, almost breaking world records.

Adam Leroy Lane (born August 7, 1964) is a convicted murderer and suspected serial killer who was dubbed the Highway Killer because his crimes took place near highways, which he frequently traveled due to his job as a truck driver.

Anna Margaretha Zwanziger (7 August 1760 – 17 September 1811) was a German serial killer. She used arsenic, which she referred to as "her truest friend".

Countess Elizabeth Báthory of Ecsed (Hungarian: Báthori Erzsébet, pronounced [ˈbaːtori ˈɛrʒeːbɛt]; Slovak: Alžbeta Bátoriová, 7 August 1560 – 21 August 1614) was a Hungarian noblewoman and alleged serial killer from the powerful House of Báthory, who owned land in the Kingdom of Hungary (now Slovakia). Báthory and four of her servants were accused of torturing and killing hundreds of girls and women from 1590 to 1610.